Response of carbon assimilation and chlorophyll fluorescence to soybean leaf phosphorus across CO2: Alternative electron sink, nutrient efficiency and critical concentration
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- 作者：Shardendu K. Singha ; b ; shardendu.singh@ars.usda.gov" class="auth_mail" title="E-mail the corresponding author ; singh.shardendu@gmail.com" class="auth_mail" title="E-mail the corresponding author ; Vangimalla R. Reddya
- 关键词：CF ; chlorophyll fluorescence ; CLPC ; critical leaf phosphorus concentration ; Caro ; carotenoids ; Chl ; chlorophylls ; Tchl/Caro ; total chlorophyll/carotenoids ratio ; Fo&prime ; minimal fluorescence yield ; Fm&prime ; maximal fluorescence yield ; Fs ; steady state fluorescence yield ; Fv&prime ; variable fluorescence yield ; Fv&prime ; /Fm&prime ; quantum efficiency by oxidized (open) photosystem-II (PSII) reaction center in light or PSII efficiency ; JF and JG ; electron transport rate calculated from chloro
- 刊名：Journal of Photochemistry and Photobiology B: Biology
- 出版年：2015
- 出版时间：October 2015
- 年：2015
- 卷：151
- 期：Complete
- 页码：276-284
- 全文大小：2180 K
文摘
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We examined response of soybean photosynthetic processes to P deficiency and CO2.
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Photorespiration was the main mechanism to utilize excess energy under P deficiency.
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The alternative electron sink appeared to decline in P-deficient leaves.
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The P utilization efficiency of photosynthesis increased under P deficiency.
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Critical leaf P concentration for photosynthetic processes was higher at elevated CO2.