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23 results on '"Peng, Chang-Lian"'

1. Different responses of macro- and microelement contents of 41 subtropical plants to environmental changes in the wet and dry seasons.

Author

Yu, Zheng-Chao, Zheng, Xiao-Ting, He, Wei, Lin, Wei, Yan, Guan-Zhao, Zhu, Hui, and Peng, Chang-Lian

Subjects
TROPICAL plants, SHRUBS, CLIMATE change, TRACE elements, SEASONS, PLANT drying
Abstract

Differences in plant leaf elemental contents due to seasonal climate change reflect potential plant growth strategies. However, the distribution patterns of elements mediated by seasonal climate change remain unclear. This limits assessment of plant growth status and prediction of plant growth dynamics under global climate change. We collected 41 subtropical evergreen broadleaf plant leaves (31 tree species and 10 shrub species) during the wet and dry seasons, and determined foliar contents of macro- and microelements by inductively coupled plasma mass spectrometer. Our results showed that 41 plant leaves had significantly greater macroelement contents and significantly lower microelement contents in wet season than dry season. The highest macroelement content was in tree layer plants in wet season, followed by tree layer plants in dry season and shrub layer plants in wet season, the lowest was in shrub layer plants in dry season. The highest microelement content was in tree and shrub layer plants in dry season, followed by shrub layer plants in wet season, the lowest was in tree layer plants in wet season. Our results show that macro- and microelement contents of plant leaves with different vertical structures are affected by seasonal climate change. The transition from wet to dry season was detrimental to tree layer plants growth, but had less impact on shrub layer plants growth. These findings provide valuable evidence for predicting how different vertically structured subtropical evergreen broadleaf plants can adapt to changes in wet and dry season environments and to future global climate change. [ABSTRACT FROM AUTHOR]

Published
2023
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22. Amaranthine Plays an Important Role in Photoprotection for Alternanthera SessilisUnder Photooxidative Stress

Author

Chen, Xiong-Wei, Shao, Ling, Song, Li-Ying, Chen, Yuan-Jun, Peng, Chang-Lian, and Zhang, Qiang

Abstract

ABSTRACTTo reveal the potential role of amaranthine in photoprotection, the effects of photooxidative stress induced by methyl viologen (10 μmol-L−1) in the light (100 μmol-m−2-s−1) were investigated in the leaves of two ecotypes of Alternanthera sessilis (L.) DC: a red-leaf ecotype, RE; and another, green-leaf ecotype, GE). Photooxidative stress caused decreased contents of chlorophyll, total phenolics and flavonoid, decreased total antioxidative capacity (DPPH* scavenging capacity), photochemical efficiency, and increased cell death rate in the leaves of both A. sessilis ecotypes. However, the RE-ecotype showed better tolerance to photooxidation than the GE-ecotype. Correspondingly, the amaranthine level in the RE-ecotype (control) was 35 times as high as that in the GE-ecotype (control). The better tolerance to photooxidation in the RE-ecotype was mostly related to the potential role of amaranthine. Our results implied that amaranthine could be used in the detoxification pathway in anti-photooxidation and thus plays an important role in photoprotection, accounting for the better tolerance to photooxidation in the RE-ecotype of A. sessilis.

Published
2013
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23. A magic red coat on the surface of young leaves: anthocyanins distributed in trichome layer protect Castanopsis fissa leaves from photoinhibition.

Author

Zhang TJ, Chow WS, Liu XT, Zhang P, Liu N, and Peng CL

Subjects
Chlorophyll metabolism, Fagaceae radiation effects, Forests, Photosynthesis, Plant Leaves chemistry, Plant Leaves radiation effects, Ribulose-Bisphosphate Carboxylase analysis, Sunlight, Trees radiation effects, Trichomes radiation effects, Anthocyanins physiology, Fagaceae physiology, Plant Leaves physiology, Trees physiology, Trichomes physiology
Abstract

The presence of anthocyanins in young leaves plays an important role in mitigation against photodamage and allows leaves to grow and develop normally. Many studies have reported that foliar anthocyanins are distributed within the vacuoles of mesophyll cells, so we explored the novel defence style of anthocyanin-coated young leaves of Castanopsis fissa, a dominant subtropical forest tree species, via removable trichomes. Anthocyanins were distributed in C. fissa leaf trichomes, which produced a red coating for the young leaves. As young leaves developed and then matured, the thickness and density of the anthocyanin trichomes progressively decreased, the coating finally disappearing, allowing greater utilization of light by mature leaves. In addition to anthocyanins, the trichomes contained a remarkably high amount of phenolics, which enable the red coating to be more efficient in screening ultraviolet light. Compared with mature leaves, the young leaves exhibited lower photosynthetic ability, which was attributable to the reduced chlorophyll and Rubisco contents. Removal of the red coating had little effect on the photosynthetic capacity of young leaves. However, the young leaves without the coating suffered greater light-induced photoinhibition due to greater excess light entering the chloroplast and the production of H 2 O 2 Our results suggest that the anthocyanin coating is photoprotective and this anthocyanin defence style may be a metabolically cost-effective way of adjusting the anthocyanin content in response to demand., (© The Author 2016. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.)

Published
2016
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