Gene expression profiles and metabolic pathways responsible for male sterility in cybrid pummelo.
Gene Expression Regulation, Plant
Plant Infertility
/ genetics
Metabolic Networks and Pathways
/ genetics
Citrus
/ genetics
Pollen
/ genetics
Flowers
/ genetics
Transcriptome
/ genetics
Reactive Oxygen Species
/ metabolism
Gene Expression Profiling
Oxylipins
/ metabolism
Plant Proteins
/ genetics
Cyclopentanes
/ metabolism
Citrus
Cybrid
Male sterility
Metabolome
Seedless breeding
Transcriptome
Journal
Plant cell reports
ISSN: 1432-203X
Titre abrégé: Plant Cell Rep
Pays: Germany
ID NLM: 9880970
Informations de publication
Date de publication:
15 Oct 2024
15 Oct 2024
Historique:
received:
07
08
2024
accepted:
03
10
2024
medline:
16
10
2024
pubmed:
16
10
2024
entrez:
15
10
2024
Statut:
epublish
Résumé
Abnormal expression of genes regulating anther and pollen development and insufficient accumulation of male sterility (MS)- related metabolites lead to MS in cybrid pummelo Male sterility (MS) is a major cause of seedlessness in citrus, which is an important trait for fresh fruit. Understanding the mechanism of MS is important for breeding seedless citrus cultivars. In this study, we dissected the transcriptional, metabolic and physiological mechanisms of MS in somatic cybrid of pummelo (G1 + HBP). G1 + HBP exhibited severe male sterility, manifesting as retarded anther differentiation, abnormal anther wall development (especially tapetum and endothecium), and deficient pollen wall formation. In the anthers of G1 + HBP, the expression of genes regulating anther differentiation and tapetum development was abnormal, and the expression of genes regulating endothecium secondary lignification thickening and pollen wall formation was down-regulated. The transcription of genes involved in MS-related biological processes, such as jasmonic acid (JA) signaling pathway, primary metabolism, flavonoid metabolism, and programmed cell death, was altered in G1 + HBP anthers, and the accumulation of MS-associated metabolites, including fatty acids, amino acids, sugars, ATP, flavonols and reactive oxygen species (ROS), was down-regulated in G1 + HBP anthers. In summary, abnormal expression of key genes regulating anther and pollen development, altered transcription of key genes involved in MS-related metabolic pathways, and insufficient accumulation of MS-related metabolites together lead to MS in G1 + HBP. The critical genes and the metabolism pathways identified herein provide new insights into the formation mechanism of MS in citrus and candidate genes for breeding seedless citrus.
Identifiants
pubmed: 39407042
doi: 10.1007/s00299-024-03357-x
pii: 10.1007/s00299-024-03357-x
doi:
Substances chimiques
Reactive Oxygen Species
0
jasmonic acid
6RI5N05OWW
Oxylipins
0
Plant Proteins
0
Cyclopentanes
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
262Subventions
Organisme : National Natural Science Foundation of China
ID : 32202451
Organisme : National Natural Science Foundation of China
ID : U23A20203
Organisme : Natural Science Foundation of Hubei Province
ID : 2022CFB705
Organisme : Fundamental Research Funds for the Central Universities
ID : 2662024QH004
Informations de copyright
© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
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