Effects of Warming and N Deposition on the Physiological Performances of Leymus secalinus in Alpine Meadow of Qinghai-Tibetan Plateau

Frontiers in Plant Science
Hao ShenJane C Yeomans

Abstract

Warming and Nitrogen (N) deposition are key global changes that may affect eco-physiological process of territorial plants. In this paper, we examined the effects of warming, N deposition, and their combination effect on the physiological performances of Leymus secalinus. Four treatments were established in an alpine meadow of Qinghai-Tibetan plateau: control (CK), warming (W), N deposition (N), and warming plus N deposition (NW). Warming significantly decreased the photosynthetic rate (Anet ), stomatal conductance (gs ), intercellular CO2 concentration (Ci ), and transpiration rate (Tr ), while N deposition and warming plus N deposition significantly increased those parameters of L. secalinus. Warming significantly increased the VPD and Ls , while N deposition and warming plus N deposition had a significant positive effect. Warming negatively reduced the leaf N content, Chla, Chlb, and total Chl content, while N deposition significantly promoted these traits. Warming, N deposition, and their combination significantly increased the activity of SOD, POD, and CAT. Besides, warming and warming plus N deposition significantly increased the MDA content, while N deposition significantly decreased the MDA content. N deposition and war...Continue Reading

References

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Apr 20, 2018·Nature·Terry P HughesGergely Torda

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Citations

Jul 27, 2021·Frontiers in Plant Science·Zijuan ZhouXinjing Ding
Aug 11, 2021·The Science of the Total Environment·Fuqiang WangXiaoming Shao

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Methods Mentioned

BETA
environmental stress
MDA
Fluorescence

Software Mentioned

AMOS

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