Biomechanics in plant resistance to drought

Liu, Shaobao; Han, Lixin; Jiao, Jiaojiao; Yin, Jun; Lu, Tian Jian; Xu, Feng

doi:10.1007/s10409-020-00980-1

Cited by 3 publications

(2 citation statements)

References 110 publications

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“…The measurements of stiffness or strength may indirectly give insights into global changes in both the relative content of load-bearing wall macromolecules and the patterns of their intermolecular interactions [39]. Not only is this methodology fundamental in eliciting the role of cell walls in the control of growth [41][42][43], it also appears to be beneficial in the monitoring of cell wall plasticity in response to abiotic factors, which do not necessarily relate to growth rate [11,[44][45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Cell Wall Properties Determine Genotype-Specific Response to Cold in Miscanthus × giganteus Plants

Bilska-Kos

Pietrusińska

Suski

et al. 2022

Cells

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The cell wall plays a crucial role in plant growth and development, including in response to environmental factors, mainly through significant biochemical and biomechanical plasticity. The involvement of the cell wall in C4 plants’ response to cold is, however, still poorly understood. Miscanthus × giganteus, a perennial grass, is generally considered cold tolerant and, in contrast to other thermophilic species such as maize or sorgo, can maintain a relatively high level of photosynthesis efficiency at low ambient temperatures. This unusual response to chilling among C4 plants makes Miscanthus an interesting study object in cold acclimation mechanism research. Using the results obtained from employing a diverse range of techniques, including analysis of plasmodesmata ultrastructure by means of transmission electron microscopy (TEM), infrared spectroscopy (FTIR), and biomechanical tests coupled with photosynthetic parameters measurements, we present evidence for the implication of the cell wall in genotype-specific responses to cold in this species. The observed reduction in the assimilation rate and disturbance of chlorophyll fluorescence parameters in the susceptible M3 genotype under cold conditions was associated with changes in the ultrastructure of the plasmodesmata, i.e., a constriction of the cytoplasmic sleeve in the central region of the microchannel at the mesophyll–bundle sheath interface. Moreover, this cold susceptible genotype was characterized by enhanced tensile stiffness, strength of leaf wall material, and a less altered biochemical profile of the cell wall, revealed by FTIR spectroscopy, compared to cold tolerant genotypes. These changes indicate that a decline in photosynthetic activity may result from a decrease in leaf CO2 conductance due to the formation of more compact and thicker cell walls and that an enhanced tolerance to cold requires biochemical wall remodelling. Thus, the well-established trade-off between photosynthetic capacity and leaf biomechanics found across multiple species in ecological research may also be a relevant factor in Miscanthus’ tolerance to cold. In this paper, we demonstrate that M. giganteus genotypes showing a high degree of genetic similarity may respond differently to cold stress if exposed at earlier growing seasons to various temperature regimes, which has implications for the cell wall modifications patterns.

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Section: Introductionmentioning

confidence: 99%

Cell Wall Properties Determine Genotype-Specific Response to Cold in Miscanthus × giganteus Plants

Bilska-Kos

Pietrusińska

Suski

et al. 2022

Cells

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“…In addition, conservation laws can be established by using the invariance of the action functional, the differential equations of motion, and the dynamical functions under the infinitesimal transformations, i.e., Noether conserved quantity, [2][3][4][5][6] Hojman conserved quantity, [7][8][9][10] and Mei conserved quantity. [11][12][13][14] Besides, the conservation laws can also be studied by the differential variational principle, such as the d'Alembert principle, [15] Jourdain's principle, [16][17][18][19] Gauss's principle, [19,20] and Pfaff-Birkhoff-d'Alembert principle. [20,21] In this paper, the conservation laws are constructed by the differential variational principle of Herglotz type.…”

Section: Introductionmentioning

confidence: 99%

Conservation laws for Birkhoffian systems of Herglotz type

Zhang¹,

Tian²

2018

Chinese Phys. B

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Conservation laws for the Birkhoffian system and the constrained Birkhoffian system of Herglotz type are studied. We propose a new differential variational principle, called the Pfaff-Birkhoff-d'Alembert principle of Herglotz type. Birkhoff's equations for both the Birkhoffian system and the constrained Birkhoffian system of Herglotz type are obtained. According to the relationship between the isochronal variation and the nonisochronal variation, the conditions of the invariance for the Pfaff-Birkhoff-d'Alembert principle of Herglotz type are given. Then, the conserved quantities for the Birkhoffian system and the constrained Birkhoffian system of Herglotz type are deduced. Furthermore, the inverse theorems of the conservation theorems are also established.

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Gene editing to improve drought tolerance

et al. 2022

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Drought is by far one of the main agricultural problems affecting crop production worldwide, generating even more economic losses than all biotic factors combined. Humankind has pursued the improvement of crops to enhance plant productivity under water-limiting conditions since the dawn of agriculture, initially through conventional breeding and more recently, using tools such as transgenesis and gene editing. Among gene editing techniques, the clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated (Cas) system has seen a boom in plant breeding, thus, contributing to improve tolerance to biotic and abiotic stresses. This review provides a broad view of drought tolerance mechanisms. The molecular factors mediating this complex quantitative trait and biochemical mechanisms related to drought-tolerant phenotypes are described. Likewise, gene editing tools to confer drought tolerance, limitations, and further direction of gene editing technique with CRISPR/Cas are discussed. Considerations about epigenetics of drought tolerance are mentioned as a new emerging mechanism to understand memory to stress and its possible application to obtain stress-tolerant crops via genome editing.

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Biomechanics in plant resistance to drought

Cited by 3 publications

References 110 publications

Cell Wall Properties Determine Genotype-Specific Response to Cold in Miscanthus × giganteus Plants

Cell Wall Properties Determine Genotype-Specific Response to Cold in Miscanthus × giganteus Plants

Conservation laws for Birkhoffian systems of Herglotz type

Gene editing to improve drought tolerance

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