Impatiens wuyiensis (Balsaminaceae), a new species from Fujian of Southeast China, based on morphological and molecular evidences.
Danxia landform
Flora of Southeast China
Impatiens wuyiensis
Sect. impatiens
Taxonomy
Journal
Botanical studies
ISSN: 1817-406X
Titre abrégé: Bot Stud
Pays: England
ID NLM: 101321928
Informations de publication
Date de publication:
02 Nov 2020
02 Nov 2020
Historique:
received:
28
01
2020
accepted:
21
10
2020
entrez:
3
11
2020
pubmed:
4
11
2020
medline:
4
11
2020
Statut:
epublish
Résumé
Southeast Asia, together with tropical Africa, Madagascar, South India and Sri Lanka, and the eastern Himalayas, are the five primary hotspots of species diversity of Impatiens (Balsaminaceae). China is also rich in Impatiens species, especially in the limestone karsts or 'Danxia' landforms. With zygomorphic flowers and diverse corolla morphology and color, the species in Impatiens are well-known for their ornamental use, but they are also notorious in taxonomy. During the preparation of revision of Impatiens in Zhejiang and adjacent regions, an unknown species was collected from Mt. Wuyi in Fujian Province, Southeast China. Phylogenetic analyses based on nuclear ITS, chloroplast atpB-rbcL and trnL-F sequences, together with micromorphology of pollen grains and seed coats, strongly supported the close relationship of the new species with Impatiens platysepala Y.L.Chen and I. chloroxantha Y.L.Chen. In turn, both molecular data and morphological characters also were sufficient to distinguish the new species from the other two counterparts. Our detailed morphological observations and molecular phylogenetic analyses support the recognition of Impatiens wuyiensis as a species new to science.
Sections du résumé
BACKGROUND
BACKGROUND
Southeast Asia, together with tropical Africa, Madagascar, South India and Sri Lanka, and the eastern Himalayas, are the five primary hotspots of species diversity of Impatiens (Balsaminaceae). China is also rich in Impatiens species, especially in the limestone karsts or 'Danxia' landforms. With zygomorphic flowers and diverse corolla morphology and color, the species in Impatiens are well-known for their ornamental use, but they are also notorious in taxonomy. During the preparation of revision of Impatiens in Zhejiang and adjacent regions, an unknown species was collected from Mt. Wuyi in Fujian Province, Southeast China.
RESULTS
RESULTS
Phylogenetic analyses based on nuclear ITS, chloroplast atpB-rbcL and trnL-F sequences, together with micromorphology of pollen grains and seed coats, strongly supported the close relationship of the new species with Impatiens platysepala Y.L.Chen and I. chloroxantha Y.L.Chen. In turn, both molecular data and morphological characters also were sufficient to distinguish the new species from the other two counterparts.
CONCLUSIONS
CONCLUSIONS
Our detailed morphological observations and molecular phylogenetic analyses support the recognition of Impatiens wuyiensis as a species new to science.
Identifiants
pubmed: 33140285
doi: 10.1186/s40529-020-00306-1
pii: 10.1186/s40529-020-00306-1
pmc: PMC7606395
doi:
Types de publication
Journal Article
Langues
eng
Pagination
29Subventions
Organisme : Innovative Research Group Project of the National Natural Science Foundation of China (CN)
ID : 31770212
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