In situ pod growth rate reveals contrasting diurnal sensitivity to water deficit in Phaseolus vulgaris.
Bean
NMR
drought
nuclear magnetic resonance
phenotyping
seed filling
yield
Journal
Journal of experimental botany
ISSN: 1460-2431
Titre abrégé: J Exp Bot
Pays: England
ID NLM: 9882906
Informations de publication
Date de publication:
02 06 2022
02 06 2022
Historique:
received:
14
11
2021
accepted:
22
03
2022
pubmed:
25
3
2022
medline:
7
6
2022
entrez:
24
3
2022
Statut:
ppublish
Résumé
The development of reproductive tissues determines plant fecundity and yield. Loading of resources into the developing reproductive tissue is thought to be under the co-limiting effects of source and sink strength. The dynamics of this co-limitation are unknown, largely due to an inability to measure the flux of resources into a developing sink. Here we use nuclear magnetic resonance (NMR) sensors to measure sink strength by quantifying rates of pod dry matter accumulation (pod loading) in Phaseolus vulgaris at 13-min intervals across the diel period. Rates of pod loading showed contrasting variation across light and dark periods during the onset of water deficit. In addition, rates of pod loading appeared decoupled from net photosynthetic rates when adjusted to the plant scale. Combined, these observations illustrate that the rate of pod development varies under water limitation and that continuous, non-invasive methodologies to measure sink strength provide insight into the governing processes that determine the development of reproductive tissues.
Identifiants
pubmed: 35323925
pii: 6552317
doi: 10.1093/jxb/erac097
pmc: PMC9162186
doi:
Substances chimiques
Water
059QF0KO0R
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
3774-3786Subventions
Organisme : Australian Research Council
ID : FT120100200
Informations de copyright
© The Author(s) 2022. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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