scholarly journals Regulation of Leaf Photosynthesis Through Photosynthetic Source-Sink Balance in Soybean Plants

10.5772/17717 ◽  
2011 ◽  
Author(s):  
Minobu Kasai
Keyword(s):  
Leaf Photosynthesis ◽  
Soybean Plants ◽  
Source Sink

scholarly journals Genotypic variation in morphological source and sink traits affects the response of rice photosynthesis and growth to elevated atmospheric CO2

2019 ◽  
Author(s):  
Denis Fabre ◽  
Michael Dingkuhn ◽  
Xinyou Yin ◽  
Anne Clément-Vidal ◽  
Sandrine Roques ◽  
...  
Keyword(s):  
Photosynthetic Capacity ◽  
Flag Leaf ◽  
Genotypic Variation ◽  
Growth Cycle ◽  
Plant Production ◽  
Leaf Photosynthesis ◽  
Elevated Atmospheric Co2 ◽  
Rice Genotypes ◽  
Source Sink ◽  
Source And Sink

AbstractThis study aimed to understand the response of photosynthesis and growth to e-CO2conditions (800 vs. 400 μmol mol-1) of rice genotypes differing in source-sink relationships. A proxy trait called local C source-sink ratio was defined as the ratio of flag leaf area over the number of spikelets on the corresponding panicle, and five genotypes differing in this ratio were grown in a controlled greenhouse. Differential CO2resources were applied either during the two weeks following heading (EXP1) or during the whole growth cycle (EXP2). Under e-CO2, low source-sink ratio cultivars (LSS) had greater gains in photosynthesis, and they accumulated less nonstructural carbohydrate in the flag leaf than high source-sink ratio cultivars (HSS). In EXP2, grain yield and biomass gain was also greater in LSS probably caused by their strong sink. Photosynthetic capacity response to e-CO2was negatively correlated across genotypes with local C source-sink ratio, a trait highly conserved across environments. HSS were sink-limited under e-CO2, probably associated with low triose phosphate utilization (TPU) capacity. We suggest that the local C source-sink ratio is a potential target for selecting more CO2-responsive cultivars, pending validation for a broader genotypic spectrum and for field conditions.HighlightRice local carbon source-sink ratio and sink plasticity can drive genotypic responses of leaf photosynthesis and plant production in a CO2elevation context.

Responses of leaf photosynthesis and plant growth to altered source–sink balance in a Japanese and a Dutch tomato cultivar

2011 ◽  
Vol 127 (4) ◽  
pp. 520-527 ◽  
Author(s):  
Ryo Matsuda ◽  
Katsumi Suzuki ◽  
Akimasa Nakano ◽  
Tadahisa Higashide ◽  
Masuyuki Takaichi
Keyword(s):  
Plant Growth ◽  
Leaf Photosynthesis ◽  
Tomato Cultivar ◽  
Source Sink
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