Osmotic stress affects growth, content of chlorophyll, abscisic acid, Na&lt;sup&gt;+&lt;/sup&gt;, and K&lt;sup&gt;+&lt;/sup&gt;, and expression of novel NAC genes in contrasting rice cultivars

Morales, Soledad García; Gómez-Meriño, Fernando Carlos; Trejo-Téllez, Libia Iris; Tavitas-Fuentes, Leticia; Hernández‐Aragón, Leonardo

doi:10.1007/s10535-017-0761-4

Cited by 11 publications

(8 citation statements)

References 68 publications

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“…However, any clearer trait difference for the model plants between brine and NaCl treatments indicates that osmotic stress is the main stress factor affecting the studied plants' growth and development. This is in line with the findings of García-Morales et al [83], Kumari et al [84], Osakabe et al [85] and Debez et al [86], who found that NaCl acts mainly by an osmotic effect. However, more detailed physiological studies are needed to compare the ionic composition of brine and single NaCl effects.…”

Section: Discussionsupporting

confidence: 92%

Osmotic Stress or Ionic Composition: Which Affects the Early Growth of Crop Species More?

et al. 2021

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Salinization is a key soil degradation process. An estimated 20% of total cultivated lands and 33% of irrigated agricultural lands worldwide are affected by high salinity. Much research has investigated the influence of salt (mainly NaCl) on plants, but very little is known about how this is related to natural salinity and osmotic stress. Therefore, our study was conducted to determine the osmotic and ionic salt stress responses of selected C3 and C4 cultivated plants. We focused on the early growth stages as those critical for plant development. We applied natural brine to simulate natural salinity and to compare its effect to NaCl solution. We assessed traits related to germination ability, seedlings and plantlet morphology, growth indexes, and biomass and water accumulation. Our results demonstrate that the effects of salinity on growth are strongest among plantlets. Salinity most affected water absorption in C3 plants (28% of total traits variation), but plant length in C4 plants (17–27%). Compensatory effect of ions from brine were suggested by the higher model plants’ growth success of ca 5–7% under brine compared to the NaCl condition. However, trait differences indicated that osmotic stress was the main stress factor affecting the studied plants.

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Section: Discussionsupporting

confidence: 92%

Osmotic Stress or Ionic Composition: Which Affects the Early Growth of Crop Species More?

et al. 2021

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“…During acclimation to drought stress, land plants follow numerous changes in their morphology like reduction of vegetative growth to limit water lose from their body. Osmotic stresses induce morphological growth-arrest along with the reduction of Chl contents in angiosperms, including rice and Arabidopsis ( Ozfidan et al, 2013 ; Kumari et al, 2014 ; García-Morales et al, 2018 ). Exposure of M. polymorpha thallus to the osmotic stressors for 15 days resulted in severe growth inhibition ( Fig.…”

Section: Resultsmentioning

confidence: 99%

Acclimation of liverwort Marchantia polymorpha to physiological drought reveals important roles of antioxidant enzymes, proline and abscisic acid in land plant adaptation to osmotic stress

Ghosh

Tompa

Rahman

et al. 2021

PeerJ

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Liverwort Marchantia polymorpha is considered as the key species for addressing a myriad of questions in plant biology. Exploration of drought tolerance mechanism(s) in this group of land plants offers a platform to identify the early adaptive mechanisms involved in drought tolerance. The current study aimed at elucidating the drought acclimation mechanisms in liverwort’s model M. polymorpha. The gemmae, asexual reproductive units of M. polymorpha, were exposed to sucrose (0.2 M), mannitol (0.5 M) and polyethylene glycol (PEG, 10%) for inducing physiological drought to investigate their effects at morphological, physiological and biochemical levels. Our results showed that drought exposure led to extreme growth inhibition, disruption of membrane stability and reduction in photosynthetic pigment contents in M. polymorpha. The increased accumulation of hydrogen peroxide and malondialdehyde, and the rate of electrolyte leakage in the gemmalings of M. polymorpha indicated an evidence of drought-caused oxidative stress. The gemmalings showed significant induction of the activities of key antioxidant enzymes, including superoxide dismutase, catalase, ascorbate peroxidase, dehydroascorbate reductase and glutathione S-transferase, and total antioxidant activity in response to increased oxidative stress under drought. Importantly, to counteract the drought effects, the gemmalings also accumulated a significant amount of proline, which coincided with the evolutionary presence of proline biosynthesis gene Δ1-pyrroline-5-carboxylate synthase 1 (P5CS1) in land plants. Furthermore, the application of exogenous abscisic acid (ABA) reduced drought-induced tissue damage and improved the activities of antioxidant enzymes and accumulation of proline, implying an archetypal role of this phytohormone in M. polymorpha for drought tolerance. We conclude that physiological drought tolerance mechanisms governed by the cellular antioxidants, proline and ABA were adopted in liverwort M. polymorpha, and that these findings have important implications in aiding our understanding of osmotic stress acclimation processes in land plants.

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“…Also, photosynthetic pigments harvest the light for photosynthesis process ( Rahneshan et al., 2018 ; Lan et al., 2020 ). Osmotic condition can injury the chlorophyll content and prevent synthesis of chlorophyll pigments, therefore chlorophyll degradation is one of the subsequences of osmotic stress ( Akbari et al., 2018 ; García-Morales et al, 2018 ). In this study, decline in chlorophyll content were observed under osmotic stress.…”

Section: Discussionmentioning

confidence: 99%

Proteomics approach to investigating osmotic stress effects on pistachio

et al. 2023

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Osmotic stress can occur due to some stresses such as salinity and drought, threatening plant survival. To investigate the mechanism governing the pistachio response to this stress, the biochemical alterations and protein profile of PEG-treated plants was monitored. Also, we selected two differentially abundant proteins to validate via Real-Time PCR. Biochemical results displayed that in treated plants, proline and phenolic content was elevated, photosynthetic pigments except carotenoid decreased and MDA concentration were not altered. Our findings identified a number of proteins using 2DE-MS, involved in mitigating osmotic stress in pistachio. A total of 180 protein spots were identified, of which 25 spots were altered in response to osmotic stress. Four spots that had photosynthetic activities were down-regulated, and the remaining spots were up-regulated. The biological functional analysis of protein spots exhibited that most of them are associated with the photosynthesis and metabolism (36%) followed by stress response (24%). Results of Real-Time PCR indicated that two of the representative genes illustrated a positive correlation among transcript level and protein expression and had a similar trend in regulation of gene and protein. Osmotic stress set changes in the proteins associated with photosynthesis and stress tolerance, proteins associated with the cell wall, changes in the expression of proteins involved in DNA and RNA processing occur. Findings of this research will introduce possible proteins and pathways that contribute to osmotic stress and can be considered for improving osmotic tolerance in pistachio.

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Osmotic stress affects growth, content of chlorophyll, abscisic acid, Na<sup>+</sup>, and K<sup>+</sup>, and expression of novel NAC genes in contrasting rice cultivars

Cited by 11 publications

References 68 publications

Osmotic Stress or Ionic Composition: Which Affects the Early Growth of Crop Species More?

Osmotic Stress or Ionic Composition: Which Affects the Early Growth of Crop Species More?

Acclimation of liverwort Marchantia polymorpha to physiological drought reveals important roles of antioxidant enzymes, proline and abscisic acid in land plant adaptation to osmotic stress

Proteomics approach to investigating osmotic stress effects on pistachio

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