Leaf Growth, Gas Exchange and Chlorophyll Fluorescence Parameters in Response to Different Water Deficits in Wheat Cultivars

Wu, Xiaoli; Bao, Weikai

doi:10.1626/pps.14.254

Cited by 35 publications

(25 citation statements)

References 16 publications

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“…The Fv/Fm of furrow was significantly higher (P < 0.05) than of uniform row. The drought stress had great inhibitory effect on Fv/Fm (Wu and Bao, 2011). NAR affected the extent of aboveground and belowground dry matter production rate (Roy et al, 2012).…”

Section: Discussionmentioning

confidence: 97%

Precision Planting Patterns Effect on Growth, Photosynthetic Characteristics and Yield of Winter Wheat under Deficit Irrigation

Han¹,

Wang²,

Zhou³

2016

IJAB

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Different cultivation patterns affect the grain yields of winter wheat by regulating growth and development. In this study, the growth of wheat was observed for two years (2008-2009 and 2009-2010). We established three cultivation patterns: 25 cm uniform row planting pattern; "20 cm + 40 cm" wide-narrow row planting pattern (wide-narrow row spacing is 40 cm and 20 cm respectively); and "20 cm + 40 cm" furrow planting pattern (double lines in the furrow with 20 cm spacing, 40 cm between furrows, and ridge height of 15 cm). Three irrigation treatments viz. 90, 135 and 180 mm were established. Results showed that furrow planting pattern improved the ratio of variable over maximum fluorescence (Fv/Fm).With increasing irrigation amount, Fv/Fm increased, the amplification declined, and the net photosynthetic rate in flag leaves increased. However, such effect was not obvious beyond the irrigation range stipulated. Therefore, we recommend the furrow planting pattern, which resulted in stable yield and 135 mm deficit irrigation as optimum considering the water shortage in the area.

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Section: Discussionmentioning

confidence: 97%

Precision Planting Patterns Effect on Growth, Photosynthetic Characteristics and Yield of Winter Wheat under Deficit Irrigation

Han¹,

Wang²,

Zhou³

2016

IJAB

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“…The most vital chlorophyll fluorescence parameters are F v /F m , ETR, NPQ, q P , and 1-q P values, and they are broadly applied to plant stress physiology studies (Baker and Rosenqvist 2004;Olvera-González et al 2013;Thwe et al 2014). Excess energy may cause photoinhibition and even severe damage to the photosynthetic apparatus (Sanda et al 2011;Wilhelm and Selmar 2011;Wu and Bao 2011). In the present study, after a 10-day NaCl exposure, salt stress decreased P n , and significantly decreased F v /F m , q P , NPQ, and ETR ( Figs.…”

Section: Discussionmentioning

confidence: 99%

Exogenous GSH protects tomatoes against salt stress by modulating photosystem II efficiency, absorbed light allocation and H2O2-scavenging system in chloroplasts

Zhou

Diao

Cui

et al. 2018

Journal of Integrative Agriculture

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The effects of exogenous GSH (reduced glutathione) on photosynthetic characteristics, photosystem II efficiency, absorbed light energy allocation and the H 2 O 2-scavenging system in chloroplasts of salt-stressed tomato (Solanum lycopersicum L.) seedlings were studied using hydroponic experiments in a greenhouse. Application of exogenous GSH ameliorated saline-induced growth inhibition, the disturbed balance of Na + and Cl − ions and Na + /K + ratios, and the reduction of the net photosynthetic rate (P n). GSH also increased the maximal photochemical efficiency of PSII (F v /F m), the electron transport rate (ETR), the photochemical quenching coefficient (q P), and the non-photochemical quenching coefficient (NPQ). In addition, GSH application increased the photochemical quantum yield (Y(II)) and relative deviation from full balance between the photosystems (β/α-1) and decreased the PSII excitation pressure (1-q P) and quantum yield of non-regulated energy dissipation (Y(NO)) in leaves of salt-stressed tomatoes without BSO (L-buthionine-sulfoximine, an inhibitor of key GSH synthesis enzyme γ-glutamylcysteine synthetase) or with BSO. Further, the addition of GSH depressed the accumulation of H 2 O 2 and malondialdehyde (MDA), induced the redistribution of absorbed light energy in PSII reaction centers, and improved the endogenous GSH content, GSH/GSSH ratio and activities of H 2 O 2-scavenging enzymes (including superoxidase dismutase (SOD), catalase (CAT), peroxidase (POD) and key enzymes in the AsA-GSH cycle and Grx system) in the chloroplasts of salt-stressed plants with or without BSO. Therefore, GSH application alleviates inhibition of salt-induced growth and photosynthesis mainly by overcoming stomatal limitations, improving the PSII efficiency, and balancing the uneven distribution of light energy to reduce the risk of ROS generation and to mediate chloroplast redox homeostasis and the antioxidant defense system to protect the chloroplasts from oxidative damage. Thus, GSH may be used as a potential tool for alleviating salt stress in tomato plants.

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“…Especially, severe water deficit has several injurious effects on plant metabolic processes, at the whole plant level, including growth (Wu and Bao, 2011), water relations (Farooq et al, 2009a), nutrient uptake and metabolism (McWilliams, 2003), photosynthesis (Wahid and Rasul 2005) and assimilate partitioning (Farooq et al, 2009b). While at the molecular level, the negative effect is related with damage produced by the oxidative stress to the cell, due to a deficiency in energy dissipation, as a consequence of the drought-induced photosynthesis limitation (Garcίa-Mata and Lamattina, 2001).…”

mentioning

confidence: 99%

Exogenously Applied Nitric Oxide Enhances the Drought Tolerance in Hulless Barley

Gan

Zhong

2015

Plant Production Science

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Leaf Growth, Gas Exchange and Chlorophyll Fluorescence Parameters in Response to Different Water Deficits in Wheat Cultivars

Cited by 35 publications

References 16 publications

Precision Planting Patterns Effect on Growth, Photosynthetic Characteristics and Yield of Winter Wheat under Deficit Irrigation

Precision Planting Patterns Effect on Growth, Photosynthetic Characteristics and Yield of Winter Wheat under Deficit Irrigation

Exogenous GSH protects tomatoes against salt stress by modulating photosystem II efficiency, absorbed light allocation and H2O2-scavenging system in chloroplasts

Exogenously Applied Nitric Oxide Enhances the Drought Tolerance in Hulless Barley

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