Salinity affects production and salt tolerance of dimorphic seeds of Suaeda salsa

Wang, Fengxia; Xu, Yange; Wang, Shuai; Shi, Weiwei; Liu, Ranran; Feng, Gu; Song, Jie

doi:10.1016/j.plaphy.2015.07.005

Cited by 113 publications

(96 citation statements)

References 33 publications

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“…In our study, the proportion of brown seeds increased with increased salinity levels in the two populations of S. corniculata , thus agreeing with the results of Yao et al (2010) and Wang et al (2015). Because they germinate to high percentages in a wide range of salinities, brown seeds of Amaranthaceae species have been considered to be more fit than black seeds in harsh saline habitats (Khan et al, 2001; Song et al, 2008; Yao et al, 2010; Wang et al, 2015). However, Cao et al (2012) showed that brown seeds of S. corniculata lost viability easily after exposure to salt stress, whereas black seeds did not.…”

Section: Discussionsupporting

confidence: 90%

“…Indeed, seed morph ratio and germination percentage of dimorphic seeds differed greatly between magnitudes of soil salinity. Although many studies have tested the effects of soil salinity on a limited number of plant life history traits (Yao et al, 2010; Wang et al, 2012, 2015), our study appears to be the first to clearly detail the phenotypically plastic response of heteromorphic seeds to different levels of salinity by cultivating plants from different geographic populations in a common environment.…”

Section: Discussionmentioning

confidence: 99%

“…For example, seed morph ratio was not changed by growth of maternal plants of Suaeda aralocaspica (Amaranthaceae) in different salinities (Wang et al, 2012), whereas high salt stress increased the proportion of (non-dormant) brown seeds of Chenopodium album (Amaranthaceae) (Yao et al, 2010) and of Suaeda salsa (Amaranthaceae) (Wang et al, 2015). In our study, the proportion of brown seeds increased with increased salinity levels in the two populations of S. corniculata , thus agreeing with the results of Yao et al (2010) and Wang et al (2015). Because they germinate to high percentages in a wide range of salinities, brown seeds of Amaranthaceae species have been considered to be more fit than black seeds in harsh saline habitats (Khan et al, 2001; Song et al, 2008; Yao et al, 2010; Wang et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Divergence in Life History Traits between Two Populations of a Seed-Dimorphic Halophyte in Response to Soil Salinity

Yang

Baskin

et al. 2017

Front. Plant Sci.

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Production of heteromorphic seeds is common in halophytes growing in arid environments with strong spatial and temporal heterogeneity. However, evidence for geographic variation (reflecting local adaptation) is almost nonexistent. Our primary aims were to compare the life history traits of two desert populations of this halophytic summer annual Suaeda corniculata subsp. mongolica and to investigate the phenotypic response of its plant and heteromorphic seeds to different levels of salt stress. Dimorphic seeds (F1) of the halophyte S. corniculata collected from two distant populations (F0) that differ in soil salinity were grown in a common environment under different levels of salinity to minimize the carryover effects from the field environment and tested for variation in plant (F1) and seed (F2) traits. Compared to F1 plants grown in low soil salinity, those grown in high salinity (>0.2 mol⋅L-1) were smaller and produced fewer seeds but had a higher reproductive allocation and a higher non-dormant brown seed: dormant black seed ratio. High salinity during plant growth decreased germination percentage of F2 black seeds but had no effect on F2 brown seeds. Between population differences in life history traits in the common environment corresponded with those in the natural populations. Phenotypic differences between the two populations were retained in F1 plants and in F2 seeds in the common environment, which suggests that the traits are genetically based. Our results indicate that soil salinity plays an ecologically important role in population regeneration of S. corniculata by influencing heteromorphic seed production in the natural habitat.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Divergence in Life History Traits between Two Populations of a Seed-Dimorphic Halophyte in Response to Soil Salinity

Yang

Baskin

et al. 2017

Front. Plant Sci.

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“…focal adhesion kinase [FAK], SRC, phosphoinositide 3‐kinase, Rho/Rho kinase, growth factor receptors, G protein‐coupled receptors), and adapter/linker proteins that relay signals to the actin and microtubule cytoskeleton networks . By virtue of reorganization of the cytoskeleton, cancer cells can change their contractility and intracellular tension to adapt to mechanical stresses . In addition to activation of these signaling pathways, changes in gene expression (e.g.…”

Section: Mechanical Stressmentioning

confidence: 99%

Therapeutic targeting of cellular stress responses in cancer

Chen

Xie

2018

Thoracic Cancer

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Similar to bacteria, yeast, and other organisms that have evolved pathways to respond to environmental stresses, cancer cells develop mechanisms that increase genetic diversity to facilitate adaptation to a variety of stressful conditions, including hypoxia, nutrient deprivation, exposure to DNA‐damaging agents, and immune responses. To survive, cancer cells trigger mechanisms that drive genomic instability and mutation, alter gene expression programs, and reprogram the metabolic pathways to evade growth inhibition signaling and immune surveillance. A deeper understanding of the molecular mechanisms that underlie the pathways used by cancer cells to overcome stresses will allow us to develop more efficacious strategies for cancer therapy. Herein, we overview several key stresses imposed on cancer cells, including oxidative, metabolic, mechanical, and genotoxic, and discuss the mechanisms that drive cancer cell responses. The therapeutic implications of these responses are also considered, as these factors pave the way for the targeting of stress adaption pathways in order to slow cancer progression and block resistance to therapy.

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“…Seed germination and growth inhibition under stress is also related with lipid peroxidation that is measured by MDA content and low MDA content is important for normal plant growth (Zhou et al, ). The RPC5L gene plays an important role in auxin signaling (Nemchinov et al, ) and it has been reported that some hormones such as cytokinins and indole‐3‐acetic acid can enhance salt tolerance in seeds of some plants (Park et al, ; Wang et al, ). These observations also give support to our results for better seed germination.…”

Section: Discussionmentioning

confidence: 99%

Engineering of a novel gene from a halophyte: Potential for agriculture in degraded coastal saline soil

Kumari

Jha

2019

Land Degrad Dev

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To feed the ever increasing world population, more crops production per hectare has become a necessity. Soil salinity is one of the important factors causing land degradation leading to low soil aeration and water conductance. It adversely impacts plant growth and development. Adaption through modern molecular tools is an important strategy for alternative use for degraded land. To achieve this aim, we have cloned a novel salt responsive gene Salicornia brachiata RNA Poly III Complex 5 Like subunit (SbRPC5L) from an extreme halophyte and transformed it into tobacco for abiotic stress tolerance. The gene is intronless, 1,202 bp long, membrane‐localized, encoding a protein of 196 amino acids and shows upregulation under salt and osmotic stress. Tobacco plants harboring SbRPC5L perform better under stress and have more water content, membrane stability, and stress tolerance indices as compared with control plants. The transgenics exhibited lower electrolyte leakage, malondialdehyde, reactive oxygen species (ROS), H2O2, and Na+, more negative value of osmotic potential, higher K+ content, and K+/Na+ ratio. Some of the important antioxidant genes, namely, NtAPX, NtPOX, and NtSOD, get upregulated in transgenic lines. The results suggest that this novel gene has a potential to be used as a promising alternative to impart abiotic stress tolerance for climate resilient agriculture in degraded costal saline areas.

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Salinity affects production and salt tolerance of dimorphic seeds of Suaeda salsa

Cited by 113 publications

References 33 publications

Divergence in Life History Traits between Two Populations of a Seed-Dimorphic Halophyte in Response to Soil Salinity

Divergence in Life History Traits between Two Populations of a Seed-Dimorphic Halophyte in Response to Soil Salinity

Therapeutic targeting of cellular stress responses in cancer

Engineering of a novel gene from a halophyte: Potential for agriculture in degraded coastal saline soil

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