Research Advances in Plant Physiology and Ecology of Desert Riparian Forests under Drought Stress

Under drought stress, desert riparian forest plants are highly self-regulating and have their own unique water use and regulation strategies, which can respond positively in several aspects such as physiology, ecology, and individual phenotypes when coping and adapting to the stresses brought by external environmental changes. In addition, as an important component of arid zone ecosystems, desert riparian forest plants maintain the cycling process of energy and material in desert areas. Therefore, it is of great ecological value to study the role played by desert riparian forest plants in desertification control and biodiversity conservation in arid zones. The purpose of this study is to provide basic data and scientific basis for the conservation, and restoration of desert riparian forests in the inland river basin of arid zone. In this paper, the physiological and ecological responses of desert riparian plants under drought stress were analyzed by reviewing the literature and focusing on the key scientific issues such as drought avoidance mechanisms, water use, and water redistribution, and the relationship between interspecific water competition and resource sharing of desert riparian plants. The results showed that: (1) In the inland river basin of arid zone, desert riparian plants show a mutual coordination of increasing soluble sugars, proline, malondialdehyde (MDA), and decreasing peroxidase (POD), to form a unique drought avoidance mechanism, and improve their drought tolerance by changing leaf stomatal conductance resulted from regulating abscisic acid (ABA) and cytokinin (CTK) content. (2) Desert riparian forest plants have their own unique water use and regulation strategies. When the degree of drought stress increased, Populus euphratica enhanced the water flow of dominant branches by actively sacrificing the inferior branches to ensure and improve the overall survival chances of the plant, while Tamarix ramosissima weaken hydraulic conductance, and increase subsurface material inputs by reducing plant height to cope with drought stress. (3) The root systems of desert riparian plants have hydraulic uplift and water redistribution functions, and, in the hydraulic uplift process of P. euphratica and T. ramosissima root systems, there is a possibility of assisting with other species in water utilization and the existence of a resource sharing mechanism.

[1]  Jing-yan Wang,et al.  Physiology of Plant Responses to Water Stress and Related Genes: A Review , 2022, Forests.

[2]  Z. Qi,et al.  Evaluating the different methods for estimating groundwater evapotranspiration using diurnal water table fluctuations , 2022, Journal of Hydrology.

[3]  M. Ebrahim,et al.  Evaluation of Drought Tolerance of Five Maize Genotypes by Virtue of Physiological and Molecular Responses , 2021, Agronomy.

[4]  A. Carminati,et al.  Stomatal regulation prevents plants from critical water potentials during drought: Result of a model linking soil–plant hydraulics to abscisic acid dynamics , 2021, Ecohydrology.

[5]  Zhi Li,et al.  Projected Meteorological Drought over Asian Drylands under Different CMIP6 Scenarios , 2021, Remote. Sens..

[6]  Hao Li,et al.  Responses of two dominant desert plant species to the changes in groundwater depth in hinterland natural oasis, Tarim Basin , 2021, Ecology and evolution.

[7]  D. Roberts,et al.  Groundwater dependence of riparian woodlands and the disrupting effect of anthropogenically altered streamflow , 2021, Proceedings of the National Academy of Sciences.

[8]  W. Ping,et al.  Drought adaptability of phreatophytes: Insight from vertical root distribution in drylands of China , 2021 .

[9]  Sumit G. Gandhi,et al.  Plant Aquaporins: a frontward to make crop plants drought resistant. , 2021, Physiologia plantarum.

[10]  Majed A. Alotaibi,et al.  Drought Stress Impacts on Plants and Different Approaches to Alleviate Its Adverse Effects , 2021, Plants.

[11]  Yaning Chen,et al.  Drylands face potential threat of robust drought in the CMIP6 SSPs scenarios , 2021, Environmental Research Letters.

[12]  G. Zaimes,et al.  Assessing Riparian Areas of Greece—An Overview , 2020, Sustainability.

[13]  Y. Lang,et al.  Photosynthetic characteristics of Tamarix chinensis under different groundwater depths in freshwater habitats. , 2020, The Science of the total environment.

[14]  Mingjun Zhang,et al.  Contrasting Water Use Strategies of Tamarix ramosissima in Different Habitats in the Northwest of Loess Plateau, China , 2020 .

[15]  S. Fahad,et al.  Drought Tolerance Strategies in Plants: A Mechanistic Approach , 2020, Journal of Plant Growth Regulation.

[16]  Á. Sordo-Ward,et al.  Shifts in Riparian Plant Life Forms Following Flow Regulation , 2020, Forests.

[17]  Yaning Chen,et al.  Climate change may accelerate the decline of desert riparian forest in the lower Tarim River, Northwestern China: Evidence from tree-rings of Populus euphratica , 2020 .

[18]  M. Isaac,et al.  Plant Diversity and Agroecosystem Function in Riparian Agroforests: Providing Ecosystem Services and Land-Use Transition , 2020, Sustainability.

[19]  J. Si,et al.  The Mechanism of Changes in Hydraulic Properties of Populus euphratica in Response to Drought Stress , 2019, Forests.

[20]  J. Si,et al.  Comparison of Branch Water Relations in Two Riparian Species: Populus euphratica and Tamarix ramosissima , 2019, Sustainability.

[21]  Yaning Chen,et al.  Tree rings: A key ecological indicator for reconstruction of groundwater depth in the lower Tarim River, Northwest China , 2019, Ecohydrology.

[22]  T. Buckley.  How do stomata respond to water status? , 2019, The New phytologist.

[23]  Xiaoya Deng,et al.  Regulating water disturbance for mitigating drought stress to conserve and restore a desert riparian forest ecosystem , 2019, Journal of Hydrology.

[24]  Q. Feng,et al.  How changes of groundwater level affect the desert riparian forest ecosystem in the Ejina Oasis, Northwest China , 2019 .

[25]  N. Turner,et al.  Roots of Lucerne Seedlings are More Resilient to a Water Deficit than Leaves or Stems , 2019, Agronomy.

[26]  Jingwen Li,et al.  Effects of root phenotypic changes on the deep rooting of Populus euphratica seedlings under drought stresses , 2019, PeerJ.

[27]  Jun Yu Li,et al.  Early direct competition does not determine the community structure in a desert riparian forest , 2018, Scientific Reports.

[28]  Yaning Chen,et al.  Experimental study on water transport observations of desert riparian forests in the lower reaches of the Tarim River in China , 2017, International Journal of Biometeorology.

[29]  Q. Feng,et al.  Comparative study of daytime and nighttime sap flow of Populus euphratica , 2017, Plant Growth Regulation.

[30]  王海珍 Wang Haizhen,et al.  Response of Populus euphratica communities in a desert riparian forest to the groundwater level gradient in the Tarim Basin , 2017 .

[31]  A. Blum.  Osmotic adjustment is a prime drought stress adaptive engine in support of plant production. , 2017, Plant, cell & environment.

[32]  M. Pessarakli,et al.  Stomatal responses to drought stress , 2016 .

[33]  Yaning Chen,et al.  Impact of groundwater depth on leaf hydraulic properties and drought vulnerability of Populus euphratica in the Northwest of China , 2016, Trees.

[34]  Yaning Chen,et al.  The effects of groundwater depth on water uptake of Populus euphratica and Tamarix ramosissima in the hyperarid region of Northwestern China , 2016, Environmental Science and Pollution Research.

[35]  J. Si,et al.  Evidences and magnitude of nighttime transpiration derived from Populus euphratica in the extreme arid region of China , 2016, Journal of Plant Biology.

[36]  Chengyi Zhao,et al.  Competition between Populus euphratica and Tamarix ramosissima seedlings under simulated high groundwater availability , 2016, Journal of Arid Land.

[37]  Yaning Chen,et al.  Use of 2H and 18O stable isotopes to investigate water sources for different ages of Populus euphratica along the lower Heihe River , 2015, Ecological Research.

[38]  Yaning Chen,et al.  XYLEM ANATOMY AND HYDRAULIC TRAITS OF TWO CO-OCCURRING RIPARIAN DESERT PLANTS , 2015 .

[39]  L. Xiong,et al.  General mechanisms of drought response and their application in drought resistance improvement in plants , 2014, Cellular and Molecular Life Sciences.

[40]  N. Sreenivasulu,et al.  Is proline accumulation per se correlated with stress tolerance or is proline homeostasis a more critical issue? , 2014, Plant, cell & environment.

[41]  Cheng Xiaol.  Relationship among water use of different plants in Heihe River riparian forests , 2014 .

[42]  Yaning Chen,et al.  Water use strategies of the desert riparian forest plant community in the lower reaches of Heihe River Basin, China , 2014, Science China Earth Sciences.

[43]  Weihong Li,et al.  Sap flow and trunk maximum daily shrinkage (MDS) measurements for diagnosing water status of Populus euphratica in an inland river basin of Northwest China , 2013 .

[44]  Yaning Chen,et al.  Adaptation strategies of desert riparian forest vegetation in response to drought stress , 2013 .

[45]  Yaning Chen,et al.  Xylem hydraulic conductivity and embolism in riparian plants and their responses to drought stress in desert of Northwest China , 2013 .

[46]  Yaning Chen,et al.  Hydraulic redistribution of soil water in Populus euphratica Oliv. in a central Asian desert riparian forest , 2013 .

[47]  Yang Li,et al.  Assessment of hydraulic redistribution on desert riparian forests in an extremely arid area , 2013, Environmental Monitoring and Assessment.

[48]  Xingming Hao,et al.  Simulation of the effect of root distribution on hydraulic redistribution in a desert riparian forest , 2013, Ecological Research.

[49]  Q. Feng,et al.  Hydraulic redistribution of soil water by roots of two desert riparian phreatophytes in northwest China’s extremely arid region , 2013, Plant and Soil.

[50]  Q. Feng,et al.  Patterns, magnitude, and controlling factors of hydraulic redistribution of soil water by Tamarix ramosissima roots , 2013, Journal of Arid Land.

[51]  R. Su,et al.  Changes of xylem hydraulic efficiency and native embolism of Tamarix ramosissima Ledeb. seedlings under different drought stress conditions and after rewatering , 2012 .

[52]  Yaning Chen,et al.  Progress, Challenges and Prospects of Eco-Hydrological Studies in the Tarim River Basin of Xinjiang, China , 2012, Environmental Management.

[53]  Yaning Chen,et al.  The threshold of soil moisture and salinity influencing the growth of Populus euphratica and Tamarix ramosissima in the extremely arid region , 2012, Environmental Earth Sciences.

[54]  Yaning Chen,et al.  Groundwater depth affects the daily course of gas exchange parameters of Populus euphratica in arid areas , 2012, Environmental Earth Sciences.

[55]  Yaning Chen,et al.  Physiological acclimation strategies of riparian plants to environment change in the delta of the Tarim River, China , 2009 .

[56]  N. Thevs,et al.  Root suckering patterns in Populus euphratica (Euphrates poplar, Salicaceae) , 2009, Trees.

[57]  W. Qiang,et al.  Rational groundwater table indicated by the eco-physiological parameters of the vegetation: A case study of ecological restoration in the lower reaches of the Tarim River , 2006 .

[58]  Yaning Chen,et al.  Physiological response of Tamarix ramosissima under water stress along the lower reaches of Tarim River , 2006 .

[59]  C. Yong-jin.  The Process and Mechanism of Degradation of Desert Riparian Vegetation , 2006 .

[60]  C. Lortie,et al.  LINKING PATTERNS AND PROCESSES IN ALPINE PLANT COMMUNITIES: A GLOBAL STUDY , 2005 .

[61]  R. Xiao,et al.  Physiological response of desert plants to watering in hyper arid areas of Tarim River , 2005 .

[62]  Yaning Chen,et al.  Analysis on the ecological benefits of the stream water conveyance to the dried-up river of the lower reaches of Tarim River, China , 2004 .

[63]  Chen Yaning,et al.  The Influence of Groundwater on Vegetation in the Lower Reaches of Tarim River,China , 2003 .

[64]  Chen Ling-zhi,et al.  The Revision of Plant Life- form System and an Analysis of the Life- form Spectrum of Forest Plants in the Warm Temperate Zone of China , 1998 .

[65]  Dirk Inzé,et al.  SUPEROXIDE DISMUTASE AND STRESS TOLERANCE , 1992 .

[66]  M. Evenari.  Adaptations of plants and animals to the desert environment , 1985 .