Biomechanics in plant resistance to drought
- PDF / 2,780,706 Bytes
- 16 Pages / 595.276 x 790.866 pts Page_size
- 0 Downloads / 188 Views
REVIEW PAPER
Biomechanics in plant resistance to drought Shaobao Liu1,2 · Han Liu3,4 · Jiaojiao Jiao4 · Jun Yin1,2 · Tian Jian Lu1,2 · Feng Xu3,4 Received: 18 March 2020 / Revised: 21 May 2020 / Accepted: 13 June 2020 © The Chinese Society of Theoretical and Applied Mechanics and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract During drought, plant functions at multi-levels (i.e., tissue, cellular and molecular) are adjustable with the change of water condition, which is known as drought resistance. Various biological, chemical and physical mechanisms have been found in plant drought resistance, among which the role of physical cues (especially mechanics) has attracted significantly increasing attention. Recent studies have shown that mechanics is one of the fundamental factors that control the responses and self-adaptation from tissue to molecular levels in plant when the external conditions changes. In the review, we examine how the factor of mechanics acts on the multi-level plant functions under drought stress, including water transport, tissue deformation, cell growth, cell movements, molecules interaction and signal pathway. Keywords Water transport · Deformation · Molecule interaction · Multi-level · Self-adaptation Botanical vocabulary Stamens The pollen-producing reproductive organ of a flower Xylem One transport tissue in vascular plants that can transport water and some nutrients from the roots to leaves Vessels A system in xylem that can conduct water and consists of a column of cells Tracheid Elongated cells in the xylem that can transport water and mineral salts
* Tian Jian Lu [email protected] * Feng Xu [email protected] 1
State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2
Nanjing Center for Multifunctional Lightweight Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
3
MOE Key Laboratory of Biomedical Information Engineering, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China
4
Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an 710049, China
Conduits Cells that can conduct water in trees Sapwood The newest part of xylem, and contains living ray cells Xylem sap Water flowing in xylem conduits Phloem The living cells in vascular plants that consists of sieve tubes, parenchyma cells and so on, and can also transport sugars from the leaves to other parts, like roots Cavitation Bubbles are formed in liquid phase under relatively low pressure and break the water transporting in trees Transpiration Water evaporation through a plant aboveground parts, such as stems, leaves and flowers Transpiration pull The force driving water upward from the root to leaves especially from the stomata Trichome Epidermal outgrowths produced into an elongate hairlike structure Pollen grains Male microgametophytes of seed plants
13
Vol.:(012345678
Data Loading...
