Agroecological genetics of biomass allocation in wheat uncovers genotype interactions with canopy shade and plant size
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Agroecological genetics of biomass allocation in wheat uncovers genotype interactions with canopy shade and plant size. / Golan, Guy; Weiner, Jacob; Zhao, Yusheng; Schnurbusch, Thorsten.
I: New Phytologist, Bind 242, Nr. 1, 2024, s. 107-120.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Agroecological genetics of biomass allocation in wheat uncovers genotype interactions with canopy shade and plant size
AU - Golan, Guy
AU - Weiner, Jacob
AU - Zhao, Yusheng
AU - Schnurbusch, Thorsten
N1 - Publisher Copyright: © 2024 The Authors. New Phytologist © 2024 New Phytologist Foundation.
PY - 2024
Y1 - 2024
N2 - How plants distribute biomass among organs influences resource acquisition, reproduction and plant–plant interactions, and is essential in understanding plant ecology, evolution, and yield production in agriculture. However, the genetic mechanisms regulating allocation responses to the environment are largely unknown. We studied recombinant lines of wheat (Triticum spp.) grown as single plants under sunlight and simulated canopy shade to investigate genotype-by-environment interactions in biomass allocation to the leaves, stems, spikes, and grains. Size-corrected mass fractions and allometric slopes were employed to dissect allocation responses to light limitation and plant size. Size adjustments revealed light-responsive alleles associated with adaptation to the crop environment. Combined with an allometric approach, we demonstrated that polymorphism in the DELLA protein is associated with the response to shade and size. While a gibberellin-sensitive allelic effect on stem allocation was amplified when plants were shaded, size-dependent effects of this allele drive allocation to reproduction, suggesting that the ontogenetic trajectory of the plant affects the consequences of shade responses for allocation. Our approach provides a basis for exploring the genetic determinants underlying investment strategies in the face of different resource constraints and will be useful in predicting social behaviours of individuals in a crop community.
AB - How plants distribute biomass among organs influences resource acquisition, reproduction and plant–plant interactions, and is essential in understanding plant ecology, evolution, and yield production in agriculture. However, the genetic mechanisms regulating allocation responses to the environment are largely unknown. We studied recombinant lines of wheat (Triticum spp.) grown as single plants under sunlight and simulated canopy shade to investigate genotype-by-environment interactions in biomass allocation to the leaves, stems, spikes, and grains. Size-corrected mass fractions and allometric slopes were employed to dissect allocation responses to light limitation and plant size. Size adjustments revealed light-responsive alleles associated with adaptation to the crop environment. Combined with an allometric approach, we demonstrated that polymorphism in the DELLA protein is associated with the response to shade and size. While a gibberellin-sensitive allelic effect on stem allocation was amplified when plants were shaded, size-dependent effects of this allele drive allocation to reproduction, suggesting that the ontogenetic trajectory of the plant affects the consequences of shade responses for allocation. Our approach provides a basis for exploring the genetic determinants underlying investment strategies in the face of different resource constraints and will be useful in predicting social behaviours of individuals in a crop community.
KW - allocation
KW - allometry
KW - biomass
KW - competition
KW - G × E
KW - light
KW - plasticity
KW - wheat
U2 - 10.1111/nph.19576
DO - 10.1111/nph.19576
M3 - Journal article
C2 - 38326944
AN - SCOPUS:85184420418
VL - 242
SP - 107
EP - 120
JO - New Phytologist
JF - New Phytologist
SN - 0028-646X
IS - 1
ER -
ID: 383397174