Alejandro Olmedo-Velarde

Affiliations

Department of Plant and Environmental Protection Sciences, University of Hawaii, Honolulu, HI, United States.

Publications (20)

A Virus Infecting

Frontiers in microbiology

Avec: Alejandro Olmedo-Velarde , John Hu , Michael J Melzer

Exploring in-silico prediction for the development of a RT-qPCR-high resolution melting assay for the broad detection of emaraviruses.

Journal of virological methods

Avec: Alejandro Olmedo-Velarde , Francisco M Ochoa-Corona , Adriana E Larrea-Sarmiento , Toufic Elbeaino , Francisco Flores

Plant part and a steep environmental gradient predict plant microbial composition in a tropical watershed.

The ISME journal

Avec: Jared Bernard , Christopher B Wall , Maria S Costantini , Randi L Rollins , Melissa L Atkins , Feresa P Cabrera , Nicolas D Cetraro , Christian K J Feliciano , Austin L Greene , Philip K Kitamura , Alejandro Olmedo-Velarde , Vithanage N S Sirimalwatta , Helen W Sung , Leah P M Thompson , Huong T Vu , Chad J Wilhite , Anthony S Amend

Genome sequence of pineapple secovirus B, a second sadwavirus reported infecting Ananas comosus.

Archives of virology

Avec: Adriana Larrea-Sarmiento , Andrew D W Geering , Alejandro Olmedo-Velarde , Xupeng Wang , Wayne Borth , Tracie K Matsumoto , Jon Y Suzuki , Marisa M Wall , Michael Melzer , Richard Moyle , Murray Sharman , John Hu , John E Thomas

First detection and complete genome sequence of a new tobamovirus naturally infecting Hibiscus rosa-sinensis in Hawaii.

Archives of virology

Avec: Xupeng Wang , Adriana Larrea-Sarmiento , Alejandro Olmedo-Velarde , Alexandra Kong , Wayne Borth , Jon Y Suzuki , Marisa M Wall , Michael Melzer , John Hu

Novel Fig-Associated Viroid-Like RNAs Containing Hammerhead Ribozymes in Both Polarity Strands Identified by High-Throughput Sequencing.

Frontiers in microbiology

Avec: Alejandro Olmedo-Velarde , Beatriz Navarro , John S Hu , Michael J Melzer , Francesco Di Serio

A novel ampelovirus associated with mealybug wilt of pineapple (Ananas comosus).

Virus genes

Avec: Adriana Larrea-Sarmiento , Alejandro Olmedo-Velarde , Xupeng Wang , Wayne Borth , Tracie K Matsumoto , Jon Y Suzuki , Marisa M Wall , Michael Melzer , John Hu

Survey of Viruses Infecting

Plant disease

Avec: Xupeng Wang , Adriana Larrea-Sarmiento , Alejandro Olmedo-Velarde , Maher Al Rwahnih , Wayne Borth , Jon Y Suzuki , Marisa M Wall , Michael Melzer , John Hu

Molecular and Biological Characterization of a Novel Tobamovirus Infecting Sunn Hemp (

Plant disease

Avec: Alexandra T Kong , Alejandro Olmedo-Velarde , Wayne Borth , Koon-Hui Wang , John S Hu , Michael J Melzer

2021 Taxonomic update of phylum Negarnaviricota (Riboviria: Orthornavirae), including the large orders Bunyavirales and Mononegavirales.

Archives of virology

Avec: Jens H Kuhn , Scott Adkins , Bernard R Agwanda , Rim Al Kubrusli , Sergey V Alkhovsky , Gaya K Amarasinghe , Tatjana Avšič-Županc , María A Ayllón , Justin Bahl , Anne Balkema-Buschmann , Matthew J Ballinger , Christopher F Basler , Sina Bavari , Martin Beer , Nicolas Bejerman , Andrew J Bennett , Dennis A Bente , Éric Bergeron , Brian H Bird , Carol D Blair , Kim R Blasdell , Dag-Ragnar Blystad , Jamie Bojko , Wayne B Borth , Steven Bradfute , Rachel Breyta , Thomas Briese , Paul A Brown , Judith K Brown , Ursula J Buchholz , Michael J Buchmeier , Alexander Bukreyev , Felicity Burt , Carmen Büttner , Charles H Calisher , Mengji Cao , Inmaculada Casas , Kartik Chandran , Rémi N Charrel , Qi Cheng , Yuya Chiaki , Marco Chiapello , Il-Ryong Choi , Marina Ciuffo , J Christopher S Clegg , Ian Crozier , Elena Dal Bó , Juan Carlos de la Torre , Xavier de Lamballerie , Rik L de Swart , Humberto Debat , Nolwenn M Dheilly , Emiliano Di Cicco , Nicholas Di Paola , Francesco Di Serio , Ralf G Dietzgen , Michele Digiaro , Olga Dolnik , Michael A Drebot , J Felix Drexler , William G Dundon , W Paul Duprex , Ralf Dürrwald , John M Dye , Andrew J Easton , Hideki Ebihara , Toufic Elbeaino , Koray Ergünay , Hugh W Ferguson , Anthony R Fooks , Marco Forgia , Pierre B H Formenty , Jana Fránová , Juliana Freitas-Astúa , Jingjing Fu , Stephanie Fürl , Selma Gago-Zachert , George Fú Gāo , María Laura García , Adolfo García-Sastre , Aura R Garrison , Thomas Gaskin , Jean-Paul J Gonzalez , Anthony Griffiths , Tony L Goldberg , Martin H Groschup , Stephan Günther , Roy A Hall , John Hammond , Tong Han , Jussi Hepojoki , Roger Hewson , Jiang Hong , Ni Hong , Seiji Hongo , Masayuki Horie , John S Hu , Tao Hu , Holly R Hughes , Florian Hüttner , Timothy H Hyndman , M Ilyas , Risto Jalkanen , Dàohóng Jiāng , Gilda B Jonson , Sandra Junglen , Fujio Kadono , Karia H Kaukinen , Michael Kawate , Boris Klempa , Jonas Klingström , Gary Kobinger , Igor Koloniuk , Hideki Kondō , Eugene V Koonin , Mart Krupovic , Kenji Kubota , Gael Kurath , Lies Laenen , Amy J Lambert , Stanley L Langevin , Benhur Lee , Elliot J Lefkowitz , Eric M Leroy , Shaorong Li , Longhui Li , Jiànróng Lǐ , Huazhen Liu , Igor S Lukashevich , Piet Maes , William Marciel de Souza , Marco Marklewitz , Sergio H Marshall , Shin-Yi L Marzano , Sebastien Massart , John W McCauley , Michael Melzer , Nicole Mielke-Ehret , Kristina M Miller , Tobi J Ming , Ali Mirazimi , Gideon J Mordecai , Hans-Peter Mühlbach , Elke Mühlberger , Rayapati Naidu , Tomohide Natsuaki , José A Navarro , Sergey V Netesov , Gabriele Neumann , Norbert Nowotny , Márcio R T Nunes , Alejandro Olmedo-Velarde , Gustavo Palacios , Vicente Pallás , Bernadett Pályi , Anna Papa , Sofia Paraskevopoulou , Adam C Park , Colin R Parrish , David A Patterson , Alex Pauvolid-Corrêa , Janusz T Pawęska , Susan Payne , Carlotta Peracchio , Daniel R Pérez , Thomas S Postler , Liying Qi , Sheli R Radoshitzky , Renato O Resende , Carina A Reyes , Bertus K Rima , Gabriel Robles Luna , Víctor Romanowski , Paul Rota , Dennis Rubbenstroth , Luisa Rubino , Jonathan A Runstadler , Sead Sabanadzovic , Amadou Alpha Sall , Maria S Salvato , Rosemary Sang , Takahide Sasaya , Angela D Schulze , Martin Schwemmle , Mang Shi , Xiǎohóng Shí , Zhènglì Shí , Yoshifumi Shimomoto , Yukio Shirako , Stuart G Siddell , Peter Simmonds , Manuela Sironi , Guy Smagghe , Sophie Smither , Jin-Won Song , Kirsten Spann , Jessica R Spengler , Mark D Stenglein , David M Stone , Jari Sugano , Curtis A Suttle , Amy Tabata , Ayato Takada , Shigeharu Takeuchi , David P Tchouassi , Amy Teffer , Robert B Tesh , Natalie J Thornburg , Yasuhiro Tomitaka , Keizō Tomonaga , Noël Tordo , Baldwyn Torto , Jonathan S Towner , Shinya Tsuda , Changchun Tu , Massimo Turina , Ioannis E Tzanetakis , Janice Uchida , Tomio Usugi , Anna Maria Vaira , Marta Vallino , Bernadette van den Hoogen , Arvind Varsani , Nikos Vasilakis , Martin Verbeek , Susanne von Bargen , Jiro Wada , Victoria Wahl , Peter J Walker , Lin-Fa Wang , Guoping Wang , Yanxiang Wang , Yaqin Wang , Muhammad Waqas , Tàiyún Wèi , Shaohua Wen , Anna E Whitfield , John V Williams , Yuri I Wolf , Jiangxiang Wu , Lei Xu , Hironobu Yanagisawa , Caixia Yang , Zuokun Yang , F Murilo Zerbini , Lifeng Zhai , Yong-Zhen Zhang , Song Zhang , Jinguo Zhang , Zhe Zhang , Xueping Zhou

In-silico prediction of RT-qPCR-high resolution melting for broad detection of emaraviruses.

PloS one

Avec: Alejandro Olmedo-Velarde , Francisco M Ochoa-Corona , Adriana E Larrea-Sarmiento , Toufic Elbeaino , Francisco Flores

Examination of the Virome of Taro Plants Affected by a Lethal Disease, the Alomae-Bobone Virus Complex, in Papua New Guinea.

Viruses

Avec: Alejandro Olmedo-Velarde , Jarin Loristo , Alexandra Kong , Philip Waisen , Koon-Hui Wang , John Hu , Michael Melzer

Genetic Diversity of Viral Populations Associated with

Pathogens (Basel, Switzerland)

Avec: Adriana E Larrea-Sarmiento , Alejandro Olmedo-Velarde , Xupeng Wang , Wayne Borth , Ryan Domingo , Tracie K Matsumoto , Jon Y Suzuki , Marisa M Wall , Michael J Melzer , John Hu

Characterization of Two Novel Viruses Within a Complex Virome from Flowering Ginger in Hawaii.

Plant disease

Avec: Adriana E Larrea-Sarmiento , Russell Galanti , Alejandro Olmedo-Velarde , Xupeng Wang , Maher Al Rwahnih , Wayne Borth , Hannah Lutgen , Maureen M Fitch , Jari Sugano , Kelvin Sewake , Jon Suzuki , Marisa M Wall , Michael Melzer , John Hu

Identification and complete genomic sequence of a novel sadwavirus discovered in pineapple (Ananas comosus).

Archives of virology

Avec: Adriana Larrea-Sarmiento , Alejandro Olmedo-Velarde , James C Green , Maher Al Rwahnih , Xupeng Wang , Yun-He Li , Weihuai Wu , Jingxin Zhang , Tracie K Matsumoto , Jon Y Suzuki , Marisa M Wall , Wayne Borth , Michael J Melzer , John S Hu

Characterization of Ti Ringspot-Associated Virus, a Novel Emaravirus Associated with an Emerging Ringspot Disease of

Plant disease

Avec: Alejandro Olmedo-Velarde , Adam C Park , Jari Sugano , Janice Y Uchida , Michael Kawate , Wayne B Borth , John S Hu , Michael J Melzer

Genome characterization of fig umbra-like virus.

Virus genes

Avec: Xupeng Wang , Alejandro Olmedo-Velarde , Adriana Larrea-Sarmiento , Anne E Simon , Alexandra Kong , Wayne Borth , Jon Y Suzuki , Marisa M Wall , John Hu , Michael Melzer

Complete genome organization and characterization of Hippeastrum latent virus.

Virus genes

Avec: Xupeng Wang , Adriana Larrea-Sarmiento , Alejandro Olmedo-Velarde , Wayne Borth , Jon Y Suzuki , Marisa M Wall , Michael Melzer , John Hu

First Detection and Genome Characterization of a New RNA Virus, Hibiscus Betacarmovirus, and a New DNA Virus, Hibiscus Soymovirus, Naturally Infecting

Viruses

Avec: Xupeng Wang , Adriana E Larrea-Sarmiento , Alejandro Olmedo-Velarde , Alexandra Kong , Wayne Borth , Jon Y Suzuki , Marisa M Wall , Michael J Melzer , John Hu

The first report of cotton leafroll dwarf virus infecting upland cotton plants in Arizona.

Plant disease

Avec: Alejandro Olmedo-Velarde , Hayk Shakhzadyan , Randy Norton , Michelle L Heck

Réseau de co-auteurs

John Hu 11 collaborations

Wayne Borth 11 collaborations

Xupeng Wang 10 collaborations

Marisa M Wall 10 collaborations

Jon Y Suzuki 9 collaborations

Michael Melzer 9 collaborations

Michael J Melzer 7 collaborations

Adriana Larrea-Sarmiento 7 collaborations

Adriana E Larrea-Sarmiento 5 collaborations

John S Hu 5 collaborations

Tracie K Matsumoto 4 collaborations

Alexandra Kong 4 collaborations

Toufic Elbeaino 3 collaborations

Maher Al Rwahnih 3 collaborations

Jari Sugano 3 collaborations

Francisco M Ochoa-Corona 2 collaborations

Francisco Flores 2 collaborations

Francesco Di Serio 2 collaborations

Koon-Hui Wang 2 collaborations

Wayne B Borth 2 collaborations

Michael Kawate 2 collaborations

Adam C Park 2 collaborations

Jared Bernard 1 collaboration

Christopher B Wall 1 collaboration

Maria S Costantini 1 collaboration

Randi L Rollins 1 collaboration

Melissa L Atkins 1 collaboration

Feresa P Cabrera 1 collaboration

Nicolas D Cetraro 1 collaboration

Christian K J Feliciano 1 collaboration

Austin L Greene 1 collaboration

Philip K Kitamura 1 collaboration

Vithanage N S Sirimalwatta 1 collaboration

Helen W Sung 1 collaboration

Leah P M Thompson 1 collaboration

Huong T Vu 1 collaboration

Chad J Wilhite 1 collaboration

Anthony S Amend 1 collaboration

Andrew D W Geering 1 collaboration

Richard Moyle 1 collaboration

Murray Sharman 1 collaboration

John E Thomas 1 collaboration

Beatriz Navarro 1 collaboration

Alexandra T Kong 1 collaboration

Jens H Kuhn 1 collaboration

Scott Adkins 1 collaboration

Bernard R Agwanda 1 collaboration

Rim Al Kubrusli 1 collaboration

Sergey V Alkhovsky 1 collaboration

Gaya K Amarasinghe 1 collaboration

Tatjana Avšič-Županc 1 collaboration

María A Ayllón 1 collaboration

Justin Bahl 1 collaboration

Anne Balkema-Buschmann 1 collaboration

Matthew J Ballinger 1 collaboration

Christopher F Basler 1 collaboration

Sina Bavari 1 collaboration

Martin Beer 1 collaboration

Nicolas Bejerman 1 collaboration

Andrew J Bennett 1 collaboration

Dennis A Bente 1 collaboration

Éric Bergeron 1 collaboration

Brian H Bird 1 collaboration

Carol D Blair 1 collaboration

Kim R Blasdell 1 collaboration

Dag-Ragnar Blystad 1 collaboration

Jamie Bojko 1 collaboration

Steven Bradfute 1 collaboration

Rachel Breyta 1 collaboration

Thomas Briese 1 collaboration

Paul A Brown 1 collaboration

Judith K Brown 1 collaboration

Ursula J Buchholz 1 collaboration

Michael J Buchmeier 1 collaboration

Alexander Bukreyev 1 collaboration

Felicity Burt 1 collaboration

Carmen Büttner 1 collaboration

Charles H Calisher 1 collaboration

Mengji Cao 1 collaboration

Inmaculada Casas 1 collaboration

Kartik Chandran 1 collaboration

Rémi N Charrel 1 collaboration

Qi Cheng 1 collaboration

Yuya Chiaki 1 collaboration

Marco Chiapello 1 collaboration

Il-Ryong Choi 1 collaboration

Marina Ciuffo 1 collaboration

J Christopher S Clegg 1 collaboration

Ian Crozier 1 collaboration

Elena Dal Bó 1 collaboration

Juan Carlos de la Torre 1 collaboration

Xavier de Lamballerie 1 collaboration

Rik L de Swart 1 collaboration

Humberto Debat 1 collaboration

Nolwenn M Dheilly 1 collaboration

Emiliano Di Cicco 1 collaboration

Nicholas Di Paola 1 collaboration

Ralf G Dietzgen 1 collaboration

Michele Digiaro 1 collaboration

Olga Dolnik 1 collaboration

Michael A Drebot 1 collaboration

J Felix Drexler 1 collaboration

William G Dundon 1 collaboration

W Paul Duprex 1 collaboration

Ralf Dürrwald 1 collaboration

John M Dye 1 collaboration

Andrew J Easton 1 collaboration

Hideki Ebihara 1 collaboration

Koray Ergünay 1 collaboration

Hugh W Ferguson 1 collaboration

Anthony R Fooks 1 collaboration

Marco Forgia 1 collaboration

Pierre B H Formenty 1 collaboration

Jana Fránová 1 collaboration

Juliana Freitas-Astúa 1 collaboration

Jingjing Fu 1 collaboration

Stephanie Fürl 1 collaboration

Selma Gago-Zachert 1 collaboration

George Fú Gāo 1 collaboration

María Laura García 1 collaboration

Adolfo García-Sastre 1 collaboration

Aura R Garrison 1 collaboration

Thomas Gaskin 1 collaboration

Jean-Paul J Gonzalez 1 collaboration

Anthony Griffiths 1 collaboration

Tony L Goldberg 1 collaboration

Martin H Groschup 1 collaboration

Stephan Günther 1 collaboration

Roy A Hall 1 collaboration

John Hammond 1 collaboration

Tong Han 1 collaboration

Jussi Hepojoki 1 collaboration

Roger Hewson 1 collaboration

Jiang Hong 1 collaboration

Ni Hong 1 collaboration

Seiji Hongo 1 collaboration

Masayuki Horie 1 collaboration

Tao Hu 1 collaboration

Holly R Hughes 1 collaboration

Florian Hüttner 1 collaboration

Timothy H Hyndman 1 collaboration

M Ilyas 1 collaboration

Risto Jalkanen 1 collaboration

Dàohóng Jiāng 1 collaboration

Gilda B Jonson 1 collaboration

Sandra Junglen 1 collaboration

Fujio Kadono 1 collaboration

Karia H Kaukinen 1 collaboration

Boris Klempa 1 collaboration

Jonas Klingström 1 collaboration

Gary Kobinger 1 collaboration

Igor Koloniuk 1 collaboration

Hideki Kondō 1 collaboration

Eugene V Koonin 1 collaboration

Mart Krupovic 1 collaboration

Kenji Kubota 1 collaboration

Gael Kurath 1 collaboration

Lies Laenen 1 collaboration

Amy J Lambert 1 collaboration

Stanley L Langevin 1 collaboration

Benhur Lee 1 collaboration

Elliot J Lefkowitz 1 collaboration

Eric M Leroy 1 collaboration

Shaorong Li 1 collaboration

Longhui Li 1 collaboration

Jiànróng Lǐ 1 collaboration

Huazhen Liu 1 collaboration

Igor S Lukashevich 1 collaboration

Piet Maes 1 collaboration

William Marciel de Souza 1 collaboration

Marco Marklewitz 1 collaboration

Sergio H Marshall 1 collaboration

Shin-Yi L Marzano 1 collaboration

Sebastien Massart 1 collaboration

John W McCauley 1 collaboration

Nicole Mielke-Ehret 1 collaboration

Kristina M Miller 1 collaboration

Tobi J Ming 1 collaboration

Ali Mirazimi 1 collaboration

Gideon J Mordecai 1 collaboration

Hans-Peter Mühlbach 1 collaboration

Elke Mühlberger 1 collaboration

Rayapati Naidu 1 collaboration

Tomohide Natsuaki 1 collaboration

José A Navarro 1 collaboration

Sergey V Netesov 1 collaboration

Gabriele Neumann 1 collaboration

Norbert Nowotny 1 collaboration

Márcio R T Nunes 1 collaboration

Gustavo Palacios 1 collaboration

Vicente Pallás 1 collaboration

Bernadett Pályi 1 collaboration

Anna Papa 1 collaboration

Sofia Paraskevopoulou 1 collaboration

Colin R Parrish 1 collaboration

David A Patterson 1 collaboration

Alex Pauvolid-Corrêa 1 collaboration

Janusz T Pawęska 1 collaboration

Susan Payne 1 collaboration

Carlotta Peracchio 1 collaboration

Daniel R Pérez 1 collaboration

Thomas S Postler 1 collaboration

Liying Qi 1 collaboration

Sheli R Radoshitzky 1 collaboration

Renato O Resende 1 collaboration

Carina A Reyes 1 collaboration

Bertus K Rima 1 collaboration

Gabriel Robles Luna 1 collaboration

Víctor Romanowski 1 collaboration

Paul Rota 1 collaboration

Dennis Rubbenstroth 1 collaboration

Luisa Rubino 1 collaboration

Jonathan A Runstadler 1 collaboration

Sead Sabanadzovic 1 collaboration

Amadou Alpha Sall 1 collaboration

Maria S Salvato 1 collaboration

Rosemary Sang 1 collaboration

Takahide Sasaya 1 collaboration

Angela D Schulze 1 collaboration

Martin Schwemmle 1 collaboration

Mang Shi 1 collaboration

Xiǎohóng Shí 1 collaboration

Zhènglì Shí 1 collaboration

Yoshifumi Shimomoto 1 collaboration

Yukio Shirako 1 collaboration

Stuart G Siddell 1 collaboration

Peter Simmonds 1 collaboration

Manuela Sironi 1 collaboration

Guy Smagghe 1 collaboration

Sophie Smither 1 collaboration

Jin-Won Song 1 collaboration

Kirsten Spann 1 collaboration

Jessica R Spengler 1 collaboration

Mark D Stenglein 1 collaboration

David M Stone 1 collaboration

Curtis A Suttle 1 collaboration

Amy Tabata 1 collaboration

Ayato Takada 1 collaboration

Shigeharu Takeuchi 1 collaboration

David P Tchouassi 1 collaboration

Amy Teffer 1 collaboration

Robert B Tesh 1 collaboration

Natalie J Thornburg 1 collaboration

Yasuhiro Tomitaka 1 collaboration

Keizō Tomonaga 1 collaboration

Noël Tordo 1 collaboration

Baldwyn Torto 1 collaboration

Jonathan S Towner 1 collaboration

Shinya Tsuda 1 collaboration

Changchun Tu 1 collaboration

Massimo Turina 1 collaboration

Ioannis E Tzanetakis 1 collaboration

Janice Uchida 1 collaboration

Tomio Usugi 1 collaboration

Anna Maria Vaira 1 collaboration

Marta Vallino 1 collaboration

Bernadette van den Hoogen 1 collaboration

Arvind Varsani 1 collaboration

Nikos Vasilakis 1 collaboration

Martin Verbeek 1 collaboration

Susanne von Bargen 1 collaboration

Jiro Wada 1 collaboration

Victoria Wahl 1 collaboration

Peter J Walker 1 collaboration

Lin-Fa Wang 1 collaboration

Guoping Wang 1 collaboration

Yanxiang Wang 1 collaboration

Yaqin Wang 1 collaboration

Muhammad Waqas 1 collaboration

Tàiyún Wèi 1 collaboration

Shaohua Wen 1 collaboration

Anna E Whitfield 1 collaboration

John V Williams 1 collaboration

Yuri I Wolf 1 collaboration

Jiangxiang Wu 1 collaboration

Lei Xu 1 collaboration

Hironobu Yanagisawa 1 collaboration

Caixia Yang 1 collaboration

Zuokun Yang 1 collaboration

F Murilo Zerbini 1 collaboration

Lifeng Zhai 1 collaboration

Yong-Zhen Zhang 1 collaboration

Song Zhang 1 collaboration

Jinguo Zhang 1 collaboration

Zhe Zhang 1 collaboration

Xueping Zhou 1 collaboration

Jarin Loristo 1 collaboration

Philip Waisen 1 collaboration

Ryan Domingo 1 collaboration

Russell Galanti 1 collaboration

Hannah Lutgen 1 collaboration

Maureen M Fitch 1 collaboration

Kelvin Sewake 1 collaboration

Jon Suzuki 1 collaboration

James C Green 1 collaboration

Yun-He Li 1 collaboration

Weihuai Wu 1 collaboration

Jingxin Zhang 1 collaboration

Janice Y Uchida 1 collaboration

Anne E Simon 1 collaboration

Hayk Shakhzadyan 1 collaboration

Randy Norton 1 collaboration

Michelle L Heck 1 collaboration