Overexpression of the Arabidopsis photorespiratory pathway gene, serine: glyoxylate aminotransferase (AtAGT1), leads to salt stress tolerance in transgenic duckweed (Lemna minor)

Yang, Lin; Han, Huajun; Liu, Miaomiao; Zuo, Zhaojiang; Zhou, Kaiqiang; Lu, Jianchao; Zhu, Yerong; Bai, Yanling; Wang, Yong

doi:10.1007/s11240-012-0280-0

Cited by 53 publications

(28 citation statements)

References 50 publications

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“…Therefore, the improved salt tolerance of the transgenic sweetpotato plants might be due, at least in part, to the enhanced ROS scavenging capacity (Zhang et al 2012b). Similar results were also observed in other reports (Fan et al 2012;Mishra et al 2013;Yang et al 2013;Liu et al 2014a, b). In addition, proline is an effective scavenger of singlet oxygen and hydroxyl radicals (Smirnoff and Cumbes 1989;Alia et al 2001).…”

Section: Discussionsupporting

confidence: 77%

“…It is usually induced by salt stress to enhance the timely dismutation of superoxide into oxygen and H 2 O 2 , which is subsequently removed through different pathways (Koca et al 2006;Zhang et al 2012b). Thus, SOD activity is often used to test the salt tolerance of plants (Mishra et al 2013;Yang et al 2013;Liu et al 2014a, b). In this study, the IbSIMT1-overexpressing sweetpotato plants had significantly higher SOD activity and significantly less H 2 O 2 accumulation compared to WT (Table 2; Fig.…”

Section: Discussionmentioning

confidence: 77%

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IbSIMT1, a novel salt-induced methyltransferase gene from Ipomoea batatas, is involved in salt tolerance

Liu

Song

et al. 2014

Plant Cell Tiss Organ Cult

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S-adenosyl-methionine (SAM)-dependent methyltransferase (MTase) genes are a multigene family; however, only a few have been characterized at the functional level. In the present study, a novel salt-induced SAM-dependent MTase gene, named IbSIMT1, was isolated from salt-tolerant sweetpotato (Ipomoea batatas (L.) Lam.) line ND98. IbSIMT1 contains a DUF248 domain of unknown function and an MTase domain. Expression of IbSIMT1 was up-regulated in sweetpotato under salt stress and abscisic acid treatment. The IbSIMT1-overexpressing sweetpotato (cv. Shangshu 19) plants exhibited significantly higher salt tolerance compared with the wild-type. Proline content was significantly increased, whereas malonaldehyde content was significantly decreased in the transgenic plants. The activities of superoxide dismutase (SOD) and photosynthesis were significantly enhanced in the transgenic plants. H 2 O 2 was also found to be significantly less accumulated in the transgenic plants than in the wild-type. Overexpression of IbSIMT1 up-regulated the salt stress responsive genes, including pyrroline-5-carboxylate synthase, pyrroline-5-carboxylate reductase, SOD, psbA and phosphoribulokinase genes under salt stress.These findings suggest that the novel IbSIMT1 gene is involved in sweetpotato salt tolerance and enhances salt tolerance of the transgenic sweetpotato plants by regulating osmotic balance, protecting membrane integrity and photosynthesis and increasing reactive oxygen species scavenging capacity.

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Section: Discussionsupporting

confidence: 77%

Section: Discussionmentioning

confidence: 77%

IbSIMT1, a novel salt-induced methyltransferase gene from Ipomoea batatas, is involved in salt tolerance

Liu

Song

et al. 2014

Plant Cell Tiss Organ Cult

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“…As a key enzyme of ROS scavenging system, SOD is usually induced by salinity to enhance the timely dismutation of superoxide into oxygen and H 2 O 2 , which is subsequently removed through different pathways [53] , [54] . Thus, SOD activity is often used to test the salt tolerance of plants [18] , [24] , [55] , [56] . In the present study, the IbMas -overexpressing sweetpotato plants had significantly higher SOD activity and significantly less H 2 O 2 accumulation compared to wild-type plants, which further showed the marked improvement of their salt tolerance ( Table 2 ; Fig.…”

Section: Discussionmentioning

confidence: 99%

A Novel α/β-Hydrolase Gene IbMas Enhances Salt Tolerance in Transgenic Sweetpotato

et al. 2014

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Salt stress is one of the major environmental stresses in agriculture worldwide and affects crop productivity and quality. The development of crops with elevated levels of salt tolerance is therefore highly desirable. In the present study, a novel maspardin gene, named IbMas, was isolated from salt-tolerant sweetpotato (Ipomoea batatas (L.) Lam.) line ND98. IbMas contains maspardin domain and belongs to α/β-hydrolase superfamily. Expression of IbMas was up-regulated in sweetpotato under salt stress and ABA treatment. The IbMas-overexpressing sweetpotato (cv. Shangshu 19) plants exhibited significantly higher salt tolerance compared with the wild-type. Proline content was significantly increased, whereas malonaldehyde content was significantly decreased in the transgenic plants. The activities of superoxide dismutase (SOD) and photosynthesis were significantly enhanced in the transgenic plants. H2O2 was also found to be significantly less accumulated in the transgenic plants than in the wild-type. Overexpression of IbMas up-regulated the salt stress responsive genes, including pyrroline-5-carboxylate synthase, pyrroline-5-carboxylate reductase, SOD, psbA and phosphoribulokinase genes, under salt stress. These findings suggest that overexpression of IbMas enhances salt tolerance of the transgenic sweetpotato plants by regulating osmotic balance, protecting membrane integrity and photosynthesis and increasing reactive oxygen species scavenging capacity.

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“…From another perspective, transgenic O. sativa that overexpressed chloroplast CS 2 had an increased photorespiration capacity, conferring salt tolerance to O. sativa (S. Zhang, ). Likewise, due to the overexpression of the A. thaliana photorespiratory pathway gene SGAT, the transgenic Lemna minor exhibited high salt tolerance (L. Yang et al, ).…”

Section: Photosynthetic Pigmentmentioning

confidence: 99%

Research on the adaptive mechanism of photosynthetic apparatus under salt stress: New directions to increase crop yield in saline soils

Huang

Liu

et al. 2019

Annals of Applied Biology

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Photosynthesis is the largest organic synthesis on Earth, salinity limits crop yield and quality worldwide directly or indirectly related to the decrease in photosynthetic efficiency. The mechanism by which photosynthetic apparatus responds to salt stress is extremely complex and varies with plant genotype, developmental stage, the history of the plant cell and duration of stress imposed. Recent studies have partially revealed the mechanisms from different levels: molecular, physiological and biochemical, morphological; but there is currently no unified mechanism to explain the effect of stress on photosynthesis. This study comprehensively reviews the adaptive mechanism of photosynthetic apparatus under salt stress, summarises methods for increasing the resistance and provides a practical way to increase grain yield in saline soils. K E Y W O R D Schloroplast, improve stress resistance, photosynthesis process, salt stress

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Overexpression of the Arabidopsis photorespiratory pathway gene, serine: glyoxylate aminotransferase (AtAGT1), leads to salt stress tolerance in transgenic duckweed (Lemna minor)

Cited by 53 publications

References 50 publications

IbSIMT1, a novel salt-induced methyltransferase gene from Ipomoea batatas, is involved in salt tolerance

IbSIMT1, a novel salt-induced methyltransferase gene from Ipomoea batatas, is involved in salt tolerance

A Novel α/β-Hydrolase Gene IbMas Enhances Salt Tolerance in Transgenic Sweetpotato

Research on the adaptive mechanism of photosynthetic apparatus under salt stress: New directions to increase crop yield in saline soils

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