Root vacuolar sequestration and suberization are prominent responses of <i>Pistacia</i> spp. rootstocks during salinity stress

Zhang, Shuxiao; Quartararo, A.; Betz, Oliver; Madahhosseini, Shahab; Heringer, Angelo Schuabb; Le, Tung; Shao, Yuhang; Caruso, Tiziano; Ferguson, Louise; Jernstedt, Judith A.; Wilkop, Thomas; Drakakaki, Georgia

doi:10.1002/pld3.315

Cited by 10 publications

(8 citation statements)

References 94 publications

(170 reference statements)

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“…The CB, a paracellular lignin deposition in the endodermis and exodermis cell walls, forces all apoplastic transport into the strictly regulated symplastic system [ 52 , 53 ]. Furthermore, SL, primarily made of long-chain fatty acids, permeates the whole exodermis/endodermis cell wall, providing a hydrophobic barrier that aids in ion and water uptake regulation [ 54 , 55 ]. SL is thought to play an essential role in preventing the direct movement of water and ions from the apoplast into the endodermal protoplasts [ 56 , 57 ].…”

Section: Physiological Mechanisms Associated With Halophyte Adaptation To Soil Salinitymentioning

confidence: 99%

Adaptive Mechanisms of Halophytes and Their Potential in Improving Salinity Tolerance in Plants

Rahman

Mostofa

Keya

et al. 2021

IJMS

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Soil salinization, which is aggravated by climate change and inappropriate anthropogenic activities, has emerged as a serious environmental problem, threatening sustainable agriculture and future food security. Although there has been considerable progress in developing crop varieties by introducing salt tolerance-associated traits, most crop cultivars grown in saline soils still exhibit a decline in yield, necessitating the search for alternatives. Halophytes, with their intrinsic salt tolerance characteristics, are known to have great potential in rehabilitating salt-contaminated soils to support plant growth in saline soils by employing various strategies, including phytoremediation. In addition, the recent identification and characterization of salt tolerance-related genes encoding signaling components from halophytes, which are naturally grown under high salinity, have paved the way for the development of transgenic crops with improved salt tolerance. In this review, we aim to provide a comprehensive update on salinity-induced negative effects on soils and plants, including alterations of physicochemical properties in soils, and changes in physiological and biochemical processes and ion disparities in plants. We also review the physiological and biochemical adaptation strategies that help halophytes grow and survive in salinity-affected areas. Furthermore, we illustrate the halophyte-mediated phytoremediation process in salinity-affected areas, as well as their potential impacts on soil properties. Importantly, based on the recent findings on salt tolerance mechanisms in halophytes, we also comprehensively discuss the potential of improving salt tolerance in crop plants by introducing candidate genes related to antiporters, ion transporters, antioxidants, and defense proteins from halophytes for conserving sustainable agriculture in salinity-prone areas.

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Section: Physiological Mechanisms Associated With Halophyte Adaptation To Soil Salinitymentioning

confidence: 99%

Adaptive Mechanisms of Halophytes and Their Potential in Improving Salinity Tolerance in Plants

Rahman

Mostofa

Keya

et al. 2021

IJMS

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“…This indicates nucleolar stress (Yang et al, 2018) triggered by both neuSAL and alkSAL that leads to the activation of the protein synthetic machinery in the studied demes (Figure S5B). Moreover, enhanced activation of 2 genes involved in suberin deposition (FAR1, FAR5) – previously reported to be transcriptionally induced by salinity (Domergue et al, 2010) - were observed in all demes under neuSAL and alkSAL (Figure SC), which suggests that increase of suberin deposition may enhance tolerance to neutral and alkaline salinity (Zhang et al, 2021).…”

Section: Resultsmentioning

confidence: 53%

At the core of salinity: convergent and divergent transcriptome response pathways to neutral and alkaline salinity in natural populations ofArabidopsis thaliana

Almira

Busoms

Pérez‐Martín

et al. 2023

Preprint

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More than 70% of land's cultivated area is affected by alkaline salinity stress. Our previous research focused on comparative studies of Arabidopsis thaliana demes with differential performance under neutral (neuSAL) and alkaline salinity (alkSAL) due to local adaptation. Here, an integrated analysis on leaf physiological, nutritional, endogenous phytohormonal and transcriptomic traits was performed to understand differences in the molecular response mechanisms to each salinity type. Higher sensitivity to alkSAL was observed in demes adapted to siliceous soils due to a decreased internal Fe use efficiency, and sequence variation detected at β-CA1 and α-CA1 loci is proposed to contribute to such Fe homeostasis imbalance. Moreover, dissection on DEGs shared by neuSAL and alkSAL confirmed enhanced inhibition of central features on primary and secondary metabolism in these demes under alkSAL. The cell wall and vacuolar β-galactosidase BGAL4 was revealed as a candidate for favoring stress-regulated cell wall rearrangement under neuSAL but not under alkSAL, due to pH-restricted enzymatic activity. Weighted correlation network analysis confirmed the involvement of the identified candidates in co-expression modules significantly correlating with favorable responses to neuSAL and alkSAL. Overall, the present study provides useful insights into key targets for breeding improvement in alkaline saline soils.

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“…For sectioning, the samples were trimmed down to a 3-to 5-mm region around the area of interest and embedded in 5% (w/v) agarose (A9539; Sigma-Aldrich, St. Louis, MO, USA) in deionized water. The embedded samples from 35 and 42 dpa were sectioned using a microtome with vibrating blade (Vibratome 1000 Plus Sectioning System; Technical Products International Inc., St. Louis, MO, USA) to 100 mm as described previously (Zhang et al 2021b). A very limited number of 42-dpa sections with intact sutures were obtained using this method as a result of the lignified state of the endocarp at this stage, which rendered the shell less flexible and increased its tendency to break at the suture from the force of the blade.…”

Section: Methodsmentioning

confidence: 99%

Difference in Kernel Shape and Endocarp Anatomy Promote Dehiscence in Pistachio Endocarp

Zhang,

Wang,

Chernikova

et al. 2023

J. Amer. Soc. Hort. Sci.

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A fully split shell in pistachio (Pistacia vera) is a trait that is preferred by consumers and is a criterion in evaluating the grade of the pistachio nut. However, although the expanding kernel has been hypothesized to provide the physical force needed for shell split, the mechanisms that control shell split remain unknown. Furthermore, it is intriguing how the shell, or endocarp, splits at the suture ridge when there is no clear dehiscence zone. The objectives of this study were 1) to identify traits associated with dehiscence in fruit in the high-split rate cultivar Golden Hills when compared with the lower split rate cultivar Kerman and determine the anatomic features associated with endocarp dehiscence at the suture region, and 2) to examine the effect of kernel shape on endocarp dehiscence. We determined that, despite the fact that the pistachio endocarp is composed primarily of a single type of polylobate sclerenchyma cell, specialization of cell shape and size at the suture site results in smaller, more flattened cells. We report there is a furrowing of the shell at the dorsal and apical suture sites, where dehiscence initiates. This furrowing is not observed at the ventral suture site or in the indehiscent fruit of Pistacia atlantica, a species that has been used as rootstock for P. vera. In addition, the size of the kernel in the sagittal axis (the width) is strongly associated with a greater split rate. Based on our results, a tentative model emerges in which, in the absence of specialized cell types, cell shape modification can create an anatomically distinct region that is mechanically weak in the endocarp for the initiation of dehiscence, whereas the force from the width of the kernel is necessary for the shell split rate difference as observed in cultivars.

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Root vacuolar sequestration and suberization are prominent responses of Pistacia spp. rootstocks during salinity stress

Abstract: This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

Cited by 10 publications

References 94 publications

Adaptive Mechanisms of Halophytes and Their Potential in Improving Salinity Tolerance in Plants

Adaptive Mechanisms of Halophytes and Their Potential in Improving Salinity Tolerance in Plants

At the core of salinity: convergent and divergent transcriptome response pathways to neutral and alkaline salinity in natural populations ofArabidopsis thaliana

Difference in Kernel Shape and Endocarp Anatomy Promote Dehiscence in Pistachio Endocarp

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