Photosynthetic response of salt-tolerant and sensitive soybean varieties

Lu, Kaixing; Cao, Bao-Hua; Feng, Ximao; He, Yi; Jiang, Dongxiang

doi:10.1007/s11099-009-0059-7

Cited by 86 publications

(59 citation statements)

References 30 publications

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“…Regarding the association of water status in plants with photosynthetic capacity, Lu et al (2009) found that photosynthesis decreased less in a salt-tolerant genotype S111-9 than in a sensitive genotype, which was mainly due to decreased stomatal conductance. Whether the higher photosynthetic activity in En-b0-1 under saline conditions (Fig.…”

Section: Discussionmentioning

confidence: 97%

Salinity Tolerance of Super-Nodulating Soybean Genotype En-b0-1

Yasuta

Kokubun

2014

Plant Production Science

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Section: Discussionmentioning

confidence: 97%

Salinity Tolerance of Super-Nodulating Soybean Genotype En-b0-1

Yasuta

Kokubun

2014

Plant Production Science

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“…Soybean plants treated with allelochemicals had lower g s associated with decreased growth (Lu et al 2009). Reduced g s is implicated with a low E (Centritto et al 2003) and, as a consequence, a decrease in nutrient solution uptake.…”

Section: L-dopa and Aqueous Extracts Of Velvet Bean Reduce The Soybeamentioning

confidence: 99%

Photosynthetic response of soybean to L-DOPA and aqueous extracts of velvet bean

et al. 2016

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L-3,4-Dihydroxyphenylalanine (L-DOPA) is an allelochemical released by roots of velvet bean (Mucuna pruriens) that affects the growth of several plant species. However, its mechanism of action is inconclusive. In this work, we compared the effects of L-DOPA (0.01-1.0 mmol L -1 ) and of aqueous extracts (300, 1200, and 3000 mg L -1 ) of velvet bean on growth and photosynthesis (gas exchange and chlorophyll a fluorescence) of soybean (Glycine max). Overall, the results showed that both L-DOPA and aqueous extracts of velvet bean reduced the growth, leaf area, photosynthetic rate (A), stomatal conductance (g s ), transpiration (E), and quantum yield of electron flow through photosystem II (PSII) in vivo (U F ). In addition, L-DOPA and aqueous extracts increased the internal CO 2 concentration (Ci) and the leaf wax and trichome density on the leaf surface, while the maximum quantum yield of PSII (F v /F m ) was not changed. These results suggest that the reduction of A should not be related exclusively to the stomatal closure, but also to limitations of the carbon metabolism, as indicated by the increase of Ci and decrease of U F . Briefly, we concluded that soybean growth inhibition by L-DOPA and aqueous extracts of velvet bean is due to the combination of damage in the root meristem and reduction in A.

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“…Salt stress inhibits CO 2 assimilation by inducing stomatal limitation and reducing the activities of key enzymes for CO 2 fixation (Loreto et al 2003;Feng et al 2007;Yang et al 2008;Lu et al 2009). The inhibited CO 2 assimilation will cause over-reduction of photosynthetic electron transport chain, elevate excitation pressure in chloroplast and may eventually lead to the increase of ROS production as well as photoinhibition (Takahashi and Murata 2008;Oukarroum et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Salt pretreatment alleviated salt-induced photoinhibition in sweet sorghum

Zhao

Liu

et al. 2015

Theor. Exp. Plant Physiol.

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Sweet sorghum is an important energy crop. This study aimed to investigate the effects of salt pretreatment on the interaction between photosystem II (PSII) and photosystem I (PSI) upon salt stress. In this study, sweet sorghum was pretreated with 150 mM NaCl for 10 days, and subsequently, the pretreated plants were subjected to severe salt stress at 300 mM NaCl. PSII and PSI photoinhibition occurred in non-pretreated plants after 4 days of salt stress, as the maximum quantum yield of PSII (Fv/Fm) and the maximal photochemical capacity of PSI (4MR/MR 0 ) significantly decreased, and their normal coordination was destroyed. The significant positive correlation between Fv/Fm and 4MR/MR 0 under salt stress indicated that PSII photoinhibition was in relation to PSI photoinhibition, and PSI photoinhibition might lead to PSII photoinhibition through inhibiting electron transport at the acceptor side of PSII. Salt stress did not induce PSII photoinhibition in salt-pretreated plants, and thus, salt pretreatment protected PSI against photoinhibition not by aggravating PSII photoinhibition. Salt pretreatment mitigated the decrease in CO 2 assimilation, reduced the feedback inhibition on photosynthetic electron transport and then contributed to suppressing PSI and PSII photoinhibition in sweet sorghum under salt stress. Therefore, the normal coordination between PSII and PSI was maintained in salt-pretreated plants. In conclusion, salt pretreatment ensured normal PSII and PSI coordination by preventing photoinhibition in sweet sorghum under salt stress.

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Photosynthetic response of salt-tolerant and sensitive soybean varieties

Cited by 86 publications

References 30 publications

Salinity Tolerance of Super-Nodulating Soybean Genotype En-b0-1

Salinity Tolerance of Super-Nodulating Soybean Genotype En-b0-1

Photosynthetic response of soybean to L-DOPA and aqueous extracts of velvet bean

Salt pretreatment alleviated salt-induced photoinhibition in sweet sorghum

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