Photosynthetic Capacity, Antioxidant Activity and Molecular Responses in Parthenocissus Quinquefolia (L.) Planch Under High Temperature Stress and Subsequent Recovery

Authors

  • Yuan Xue Tao Hebei Key Laboratory of Mining Development and Security Technology, Tangshan 063000, China
  • Li Fu Ping Hebei Key Laboratory of Mining Development and Security Technology, Tangshan 063000, China

DOI:

https://doi.org/10.3329/bjb.v50i2.54103

Keywords:

Antioxidant enzyme, Chlorophyll fluorescence, Gas exchange, High-temperature stress, Molecular responses

Abstract

Photosynthetic capacity and photosystem II (PSII) activity decreased with increasing temperature, whereas antioxidant enzyme activity showed the opposite trend. High temperature stress induced a significant increase in Φf,D, and D1 protein turnover rate. Photosynthetic capacity, PSII activity, and antioxidant enzyme levels in plants treated at 35 and 40°C were restored to control levels upon stress relief, whereas those in plants grown at 45℃ were only partially restored. Therefore, the temperature limit for heat tolerance in Parthenocissus quinquefolia is between 40 and 45℃. Further, it was observed that antioxidant enzymes were crucial for high-temperature stress resistance in P. quinquefolia, with DEGP1 protein playing a major role in the rapid turnover of D1 protein for PSII repair.

Bangladesh J. Bot. 50(2): 433-436, 2021 (June)

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Published

2021-06-18

How to Cite

Tao, Y. X., & Ping, L. F. (2021). Photosynthetic Capacity, Antioxidant Activity and Molecular Responses in Parthenocissus Quinquefolia (L.) Planch Under High Temperature Stress and Subsequent Recovery. Bangladesh Journal of Botany, 50(2), 433–436. https://doi.org/10.3329/bjb.v50i2.54103

Issue

Section

Short Communications