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- W4367018367 abstract "As an effective plant growth regulator, chitosan plays a positive role in enhancing heat tolerance in perennial turfgrass. The objective of this study was to elucidate whether chitosan-promoted thermotolerance was associated with the antioxidant defense system under long-term heat stress in creeping bentgrass (<italic>Agrostis stolonifera</italic>). Plants were treated with or without 100 mg∙L<sup>−1</sup> chitosan under either heat stress (38/28 °C, day/night) or non-stressed condition (25/20 °C, day/night) for 42 d in growth chambers. Foliar application of chitosan significantly enhanced heat tolerance as reflected by the increased turf quality through inhibiting over-accumulation of reactive oxygen species, and increasing ascorbic acid content and antioxidant enzymes activities (peroxidase, POD; ascorbate peroxidase, APX; glutathione reductase, GR; dehydroascorbate reductase, DHAR). Chitosan-treated plants also had higher transcript levels of <italic>AsCu/ZnSOD</italic>, <italic>AsCATB</italic>, <italic>AsPerox4</italic>, <italic>AsAPX2</italic>, <italic>AsAPX3</italic>, <italic>AsAPX4</italic>, <italic>AsAPX6</italic>, <italic>AsAPX8</italic>, <italic>AsGR2</italic>, and <italic>AsDHAR</italic> genes in comparison to the untreated plants. The results suggested that chitosan-promotion in heat tolerance could be associated with non-enzymatic antioxidants, antioxidant enzymes, as well as relative gene expression." @default.
- W4367018367 created "2023-04-27" @default.
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- W4367018367 date "2023-01-01" @default.
- W4367018367 modified "2023-10-16" @default.
- W4367018367 title "Chitosan-enhanced heat tolerance associated with alterations in antioxidant defense system and gene expression in creeping bentgrass" @default.
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- W4367018367 doi "https://doi.org/10.48130/gr-2023-0007" @default.
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