Cyclic electron flow around photosystem 1 is required for adaptation to salt stress in wild soybean species Glycine cyrtoloba ACC547

Yang, Yajie; Jiang, Dongxiang; Xu, Haixia; Yan, Chengqi; Hao, Shiqiang

doi:10.1007/s10535-006-0092-3

Cited by 24 publications

(13 citation statements)

References 24 publications

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“…On the contrary, C i values in 600 mmol/l salt-treated plants were significantly higher than those in other treatments when PPFD exceeded 1000 µmol/mol (Figure 3). The high salinity-induced increase of C i values was also observed by Yang et al (2006) and supported the hypothesis that the inhibition of photosynthesis caused by salt accumulation in the mesophyll produces an increase in C i , which reduces the stomatal aperture (Mansfield et al 1990). It was reported that both stomatal and non-stomatal limitations account for a reduction of photosynthesis (Farquhar and Sharkey 1982).…”

Section: Discussionsupporting

confidence: 74%

NaCl salinity-induced changes in water status, ion contents and photosynthetic properties of Shepherdia argentea (Pursh) Nutt. seedlings

Qin¹,

Wang²,

He³

et al. 2010

Plant Soil Environ.

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Two-year old seedlings of Silver buffaloberry (Shepherdia argentea (Pursh) Nutt.) were exposed to NaCl salinity (0, 200, 400 and 600 mmol/l) for 30 days. Leaf water potential (Ψ w ), chlorophyll contents (Chl a, b, and a + b) and K + content decreased with an increase in salinity. Relative water content (RWC) declined significantly with 400 and 600 mmol/l NaCl. However, salinity induced an excessive accumulation of Na + in the leaves of plants. Light responses of photosynthesis showed that net photosynthetic rate (P N ) values were continuously raised with the increase of photosynthetic photon flux density (PPFD) at all salinity levels and plants treated with 600 mmol/l salinity suffered from photoinhibition with the lowest P N values. The reduction of P N and stomatal conductance (g s ) associated with a sharp increase of intercellular CO 2 concentration (C i ) in the leaves at 600 mmol/l salt-treated plants showed that non-stomatal limitations might have prevailed over stomatal limitations under severe saline conditions, due to severe cellular dehydration, inhibited synthesis of chlorophyll and ionic imbalance and toxicity. It is concluded that S. argentea possesses high salt tolerance capacity and can be widely cultivated in salt-affected areas.

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Section: Discussionsupporting

confidence: 74%

NaCl salinity-induced changes in water status, ion contents and photosynthetic properties of Shepherdia argentea (Pursh) Nutt. seedlings

Qin¹,

Wang²,

He³

et al. 2010

Plant Soil Environ.

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“…Under stress, free radicals and reactive oxygen species (ROS: O 2 -, OH, H 2 O 2 ) accumulate and damage plant cells (Yang et al 2006;Touchette 2007). To counteract these harmful products, plants produce antioxidants (xanthophylls, peroxidases, and catalases) whose concentrations increase in order to prevent damage from oxidative stress (Noctor andFoyer 1998, Touchette 2007).…”

Section: Discussionmentioning

confidence: 99%

The effect of pulsed versus gradual salinity reduction on the physiology and survival of Halophila johnsonii Eiseman

Griffin

Durako

2012

Mar Biol

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Plants of Halophila johnsonii Eiseman were exposed, in mesocosms, to either pulsed hyposalinity treatments of 30, 15, 10, and 8 or gradual salinity reductions of two every 2 days. When salinity was pulsed, survivorship ([80 %) and maximum quantum yields ([0.7) were high in the 30 and 15 salinity treatments, but both declined in the 10 and 8 salinity treatments. Leaf osmolality declined with respect to salinity treatment, but the difference between leaf and media osmolality remained relatively constant (675 ± 177 mmol kg -1 ). In contrast, when salinity was gradually reduced, survivorship remained high from salinities of 30 to 4, and maximum quantum yields remained high from salinities of 30 to 6. Leaf osmolality declined linearly with respect to media osmolality and, similar to the pulsed treatments, the difference between leaf and media osmolality remained relatively constant from salinities of 30 to 2 (638 ± 161 mmol kg -1 ). Trolox equivalent antioxidant capacity declined over time in both pulsed and gradual salinity reduction. The results indicate that H. johnsonii is more tolerant of hyposalinity than has previously been reported and that gradually reducing salinity extended its lowsalinity tolerance threshold by approximately a salinity of 10.

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“…ACC547) and Glycine max (cv. Melrose) were germinated and cultivated in Zijingang campus of Zhejiang University as described previously (Yang et al 2006 (Neumann et al 1999) till the sixth leaves grew out. Then all seedlings were divided into two groups: one group was grown continuously in the complete solution as the non-salt stressed control while the other one was grown in complete solution plus 50 mM NaCl as the saltstressed treatment.…”

Section: Methodsmentioning

confidence: 99%

“…Post-irradiation transient in Chl fluorescence was measured using a portable photosynthesis system with an integrating Chl fluorometer (LI-6400-40 leaf chamber fluorometer, LI-COR, USA) according to the procedure described by Yang et al (2006). After dark-adaptation of the sample for 1 h, the minimum (dark) fluorescence yield (F 0 ) was obtained with a weak measuring beam (<0.1 µmol m -2 s -1 ).…”

Section: Methodsmentioning

confidence: 99%

Induction of cyclic electron flow around photosystem 1 and state transition are correlated with salt tolerance in soybean

Lu¹,

Yang²,

He³

et al. 2008

Photosynt.

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We investigated the role of cyclic electron flow around photosystem 1 (CEF1) and state transition (ST) in two soybean cultivars that differed in salt tolerance. The CEF1 and maximum photochemical efficiency (F v /F m ) were determined under control and NaCl (50 mM) stress and the NaCl-induced light-harvesting complex 2 (LHC2) phosphorylation in vitro was analysed in light and dark. NaCl induced the increase of CEF1 more greatly in wild soybean Glycine cyrtoloba (cv. ACC547) than in cultivated soybean Glycine max (cv. Melrose). The F v /F m was reduced less in G. cyrtoloba than in G. max after 10-d NaCl stress. In G. cyrtoloba, the increase of CEF1 was associated with enhancement of LHC2 phosphorylation in thylakoid membrane under both dark and light. However, in G. max the NaCl treatment decreased the LHC2 phosphorylation. Treatment with photosynthetic electron flow inhibitors (DCMU, DBMIB) inhibited LHC2 phosphorylation more in G. max than in G. cyrtoloba. Thus the NaCl-induced up-regulation in CEF1 and ST might contribute to salt resistance of G. cyrtoloba.

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Cyclic electron flow around photosystem 1 is required for adaptation to salt stress in wild soybean species Glycine cyrtoloba ACC547

Cited by 24 publications

References 24 publications

NaCl salinity-induced changes in water status, ion contents and photosynthetic properties of Shepherdia argentea (Pursh) Nutt. seedlings

NaCl salinity-induced changes in water status, ion contents and photosynthetic properties of Shepherdia argentea (Pursh) Nutt. seedlings

The effect of pulsed versus gradual salinity reduction on the physiology and survival of Halophila johnsonii Eiseman

Induction of cyclic electron flow around photosystem 1 and state transition are correlated with salt tolerance in soybean

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