Effects of Cold Acclimation and Exogenous Pytohormone Abscisic Acid Treatment on Physiological Indicators of Winterness Wheat

YaDan, Hou; ZhiFu, Guo; HuiNan, Li; Haoge, Li; Chen, Li-Jing; Ma, Hui; Li, Zhang; Lin, Jingwei; Ming, Zhong

doi:10.3923/jps.2010.125.136

Cited by 25 publications

(13 citation statements)

References 16 publications

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“…Cold stress can induce membrane damage to plants. Malonaldehyde (MDA) content and relative electrolyte leakage (EL) values were significantly increased after low temperature treatment (Zhang et al, 2006 ; Hou et al, 2010 ). Cold induces excessive production or inefficient deactivation of reactive oxygen species (ROS) such as hydrogen peroxide (H 2 O 2 ), hydroxyl radical (OH · ), and superoxide anion (O

), thereby causing injury to plants (Monk et al, 1989 ).…”

Section: Introductionmentioning

confidence: 99%

Alleviation of cold damage to photosystem II and metabolisms by melatonin in Bermudagrass

et al. 2015

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As a typical warm-season grass, Bermudagrass [Cynodon dactylon (L).Pers.] is widely applied in turf systems and animal husbandry. However, cold temperature is a key factor limiting resource utilization for Bermudagrass. Therefore, it is relevant to study the mechanisms by which Burmudagrass responds to cold. Melatonin is a crucial animal and plant hormone that is responsible for plant abiotic stress responses. The objective of this study was to investigate the role of melatonin in cold stress response of Bermudagrass. Wild Bermudagrass pre-treated with 100 μM melatonin was subjected to different cold stress treatments (−5°C for 8 h with or without cold acclimation). The results showed lower malondialdehyde (MDA) and electrolyte leakage (EL) values, higher levels of chlorophyll, and greater superoxide dismutase and peroxidase activities after melatonin treatment than those in non-melatonin treatment under cold stress. Analysis of chlorophyll a revealed that the chlorophyll fluorescence transient (OJIP) curves were higher after treatment with melatonin than that of non-melatonin treated plants under cold stress. The values of photosynthetic fluorescence parameters increased after treatment with melatonin under cold stress. The analysis of metabolism showed alterations in 46 metabolites in cold-stressed plants after melatonin treatment. Among the measured metabolites, five sugars (arabinose, mannose, glucopyranose, maltose, and turanose) and one organic acid (propanoic acid) were significantly increased. However, valine and threonic acid contents were reduced in melatonin-treated plants. In summary, melatonin maintained cell membrane stability, increased antioxidant enzymes activities, improved the process of photosystem II, and induced alterations in Bermudagrass metabolism under cold stress.

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), thereby causing injury to plants (Monk et al, 1989 ).…”

Section: Introductionmentioning

confidence: 99%

Alleviation of cold damage to photosystem II and metabolisms by melatonin in Bermudagrass

et al. 2015

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“…When plants were exposed to cold, expression of ICE1 , CBF and COR genes were up-regulated [ 4 ].As for physiological and metabolic changes under cold condition, photosynthetic carbon metabolism was found to be interrupted in Arabidopsis [ 5 ]. Additionally, MDA content and EL values increased under cold stress [ 6 , 7 ] suggesting significant oxidative damage. It was reported that soluble sugars and proline accumulated during cold acclimation [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Physiological and Molecular Mechanism of Nitric Oxide (NO) Involved in Bermudagrass Response to Cold Stress

et al. 2015

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Bermudagrass is widely utilized in parks, lawns, and golf courses. However, cold is a key factor limiting resource use in bermudagrass. Therefore, it is meaningful to study the mechanism of bermudagrass response to cold. Nitric oxide (NO) is a crucial signal molecule with multiple biological functions. Thus, the objective of this study was to investigate whether NO play roles in bermudagrass response to cold. Sodium nitroprusside (SNP) was used as NO donor, while 2-phenyl-4,4,5,5-tetramentylimidazoline-l-oxyl-3-xide (PTIO) plus NG-nitro-L-arginine methyl ester (L-NAME) were applied as NO inhibitor. Wild bermudagrass was subjected to 4 °C in a growth chamber under different treatments (Control, SNP, PTIO + L-NAME). The results indicated lower levels of malondialdehyde (MDA) content and electrolyte leakage (EL), higher value for chlorophyll content, superoxide dismutase (SOD) and peroxidase (POD) activities after SNP treatment than that of PTIO plus L-NAME treatments under cold stress. Analysis of Chlorophyll (Chl) a fluorescence transient displayed that the OJIP transient curve was higher after treatment with SNP than that of treated with PTIO plus L-NAME under cold stress. The values of photosynthetic fluorescence parameters were higher after treatment with SNP than that of treated with PTIO plus L-NAME under cold stress. Expression of cold-responsive genes was altered under cold stress after treated with SNP or PTIO plus L-NAME. In summary, our findings indicated that, as an important strategy to protect bermudagrass against cold stress, NO could maintain the stability of cell membrane, up-regulate the antioxidant enzymes activities, recover process of photosystem II (PSII) and induce the expression of cold-responsive genes.

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“…In Forsythia species treated at 4°C, MDA contents increased by %66.7% (Yan et al, 2010). Similarly, MDA levels were higher in wheat (Triticum aestivum) seedlings and strawberry (Fragaria ananassa) leaves subjected to 4 and 0°C, respectively (Hou et al, 2010;Luo et al, 2011). Electrical conductivity is widely applied to detect membrane injury caused by various biotic and abiotic stresses in plants (Whitlow et al, 1992).…”

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confidence: 99%

Antioxidant Responses and Gene Expression in Bermudagrass under Cold Stress

Fan¹,

Ren²,

Zhu³

et al. 2014

J. Amer. Soc. Hort. Sci.

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Cold stress is a key factor limiting resource use in bermudagrass (Cynodon dactylon). Under cold stress, bermudagrass growth is severely inhibited and the leaves undergo chlorosis. Therefore, rigorous investigation on the physiological and molecular mechanisms of cold stress in this turf species is urgent. The objective of this study was to investigate the physiological and molecular alteration in wild bermudagrass under cold stress, particularly the changes of transpiration rate, soluble sugar content, enzyme activities, and expression of antioxidant genes. Wild bermudagrass (C. dactylon) was planted in plastic pots (each 10 cm tall and 8 cm in diameter) filled with matrix (brown coal soil:sand 1:1) and treated with 4 °C in a growth chamber. The results displayed a dramatic decline in the growth and transpiration rates of the wild bermudagrass under 4 °C temperature. Simultaneously, cold severely destabilized the cell membrane as indicated by increased malondialdehyde content and electrolyte leakage value. Superoxide dismutase and peroxidase activities were higher in the cold regime than the control. The expression of antioxidant genes including MnSOD, Cu/ZnSOD, POD, and APX was vividly up-regulated after cold stress. In summary, our results contributed to the understanding of the role of the antioxidant system in bermudagrass’ response to cold.

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Effects of Cold Acclimation and Exogenous Pytohormone Abscisic Acid Treatment on Physiological Indicators of Winterness Wheat

Cited by 25 publications

References 16 publications

Alleviation of cold damage to photosystem II and metabolisms by melatonin in Bermudagrass

Alleviation of cold damage to photosystem II and metabolisms by melatonin in Bermudagrass

Physiological and Molecular Mechanism of Nitric Oxide (NO) Involved in Bermudagrass Response to Cold Stress

Antioxidant Responses and Gene Expression in Bermudagrass under Cold Stress

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