Physiological Responses of Robinia pseudoacacia and Quercus acutissima Seedlings to Repeated Drought-Rewatering Under Different Planting Methods

Xiao Liu; Xiao Liu; Xiao Liu; Qinyuan Zhang; Qinyuan Zhang; Qinyuan Zhang; Meixia Song; Meixia Song; Meixia Song; Ning Wang; Ning Wang; Ning Wang; Peixian Fan; Pan Wu; Pan Wu; Pan Wu; Kening Cui; Kening Cui; Kening Cui; Peiming Zheng; Peiming Zheng; Peiming Zheng; Ning Du; Ning Du; Ning Du; Hui Wang; Hui Wang; Hui Wang; Renqing Wang; Renqing Wang; Renqing Wang

doi:10.3389/fpls.2021.760510

Frontiers in Plant Science (Dec 2021)

Physiological Responses of Robinia pseudoacacia and Quercus acutissima Seedlings to Repeated Drought-Rewatering Under Different Planting Methods

Xiao Liu,
Xiao Liu,
Xiao Liu,
Qinyuan Zhang,
Qinyuan Zhang,
Qinyuan Zhang,
Meixia Song,
Meixia Song,
Meixia Song,
Ning Wang,
Ning Wang,
Ning Wang,
Peixian Fan,
Pan Wu,
Pan Wu,
Pan Wu,
Kening Cui,
Kening Cui,
Kening Cui,
Peiming Zheng,
Peiming Zheng,
Peiming Zheng,
Ning Du,
Ning Du,
Ning Du,
Hui Wang,
Hui Wang,
Hui Wang,
Renqing Wang,
Renqing Wang,
Renqing Wang

Affiliations

Xiao Liu: Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao, China
Xiao Liu: Shandong Provincial Engineering and Technology Research Center for Vegetation Ecology, Shandong University, Qingdao, China
Xiao Liu: Qingdao Forest Ecology Research Station of National Forestry and Grassland Administration, Shandong University, Qingdao, China
Qinyuan Zhang: Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao, China
Qinyuan Zhang: Shandong Provincial Engineering and Technology Research Center for Vegetation Ecology, Shandong University, Qingdao, China
Qinyuan Zhang: Qingdao Forest Ecology Research Station of National Forestry and Grassland Administration, Shandong University, Qingdao, China
Meixia Song: Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao, China
Meixia Song: Shandong Provincial Engineering and Technology Research Center for Vegetation Ecology, Shandong University, Qingdao, China
Meixia Song: Qingdao Forest Ecology Research Station of National Forestry and Grassland Administration, Shandong University, Qingdao, China
Ning Wang: Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao, China
Ning Wang: Shandong Provincial Engineering and Technology Research Center for Vegetation Ecology, Shandong University, Qingdao, China
Ning Wang: Qingdao Forest Ecology Research Station of National Forestry and Grassland Administration, Shandong University, Qingdao, China
Peixian Fan: Qingdao Forestry Station, Qingdao, China
Pan Wu: Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao, China
Pan Wu: Shandong Provincial Engineering and Technology Research Center for Vegetation Ecology, Shandong University, Qingdao, China
Pan Wu: Qingdao Forest Ecology Research Station of National Forestry and Grassland Administration, Shandong University, Qingdao, China
Kening Cui: Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao, China
Kening Cui: Shandong Provincial Engineering and Technology Research Center for Vegetation Ecology, Shandong University, Qingdao, China
Kening Cui: Qingdao Forest Ecology Research Station of National Forestry and Grassland Administration, Shandong University, Qingdao, China
Peiming Zheng: Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao, China
Peiming Zheng: Shandong Provincial Engineering and Technology Research Center for Vegetation Ecology, Shandong University, Qingdao, China
Peiming Zheng: Qingdao Forest Ecology Research Station of National Forestry and Grassland Administration, Shandong University, Qingdao, China
Ning Du: Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao, China
Ning Du: Shandong Provincial Engineering and Technology Research Center for Vegetation Ecology, Shandong University, Qingdao, China
Ning Du: Qingdao Forest Ecology Research Station of National Forestry and Grassland Administration, Shandong University, Qingdao, China
Hui Wang: Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao, China
Hui Wang: Shandong Provincial Engineering and Technology Research Center for Vegetation Ecology, Shandong University, Qingdao, China
Hui Wang: Qingdao Forest Ecology Research Station of National Forestry and Grassland Administration, Shandong University, Qingdao, China
Renqing Wang: Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao, China
Renqing Wang: Shandong Provincial Engineering and Technology Research Center for Vegetation Ecology, Shandong University, Qingdao, China
Renqing Wang: Qingdao Forest Ecology Research Station of National Forestry and Grassland Administration, Shandong University, Qingdao, China

DOI: https://doi.org/10.3389/fpls.2021.760510
Journal volume & issue: Vol. 12

Abstract

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Changing precipitation patterns have aggravated the existing uneven water distribution, leading to the alternation of drought and rewatering. Based on this variation, we studied species, namely, Robinia pseudoacacia and Quercus acutissima, with different root forms and water regulation strategy to determine physiological responses to repeated drought-rewatering under different planting methods. Growth, physiological, and hydraulic traits were measured using pure and mixed planting seedlings that were subjected to drought, repeated drought-rewatering (i.e., treatments), and well-irrigated seedlings (i.e., control). Drought had negative effects on plant functional traits, such as significantly decreased xylem water potential (Ψmd), net photosynthetic rate (AP), and then height and basal diameter growth were slowed down, while plant species could form stress imprint and adopt compensatory mechanism after repeated drought-rewatering. Mixed planting of the two tree species prolonged the desiccation time during drought, slowed down Ψmd and AP decreasing, and after rewatering, plant functional traits could recover faster than pure planting. Our results demonstrate that repeated drought-rewatering could make plant species form stress imprint and adopt compensatory mechanism, while mixed planting could weaken the inhibition of drought and finally improve the overall drought resistance; this mechanism may provide a theoretical basis for afforestation and vegetation restoration in the warm temperate zone under rising uneven spatiotemporal water distribution.

Published in Frontiers in Plant Science

ISSN: 1664-462X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Agriculture: Plant culture
Website: https://www.frontiersin.org/journals/plant-science

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