Regulation of photosynthesis under salt stress and associated tolerance mechanisms

Zahra, Noreen; Hinai, Marwa Sulaiman Al; Hafeez, Muhammad Bilal; Rehman, Abdul; Wahid, Abdul; Siddique, Kadambot H. M.; Farooq, Muhammad

doi:10.1016/j.plaphy.2022.03.003

Cited by 169 publications

(72 citation statements)

References 126 publications

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“…According to Sun et al [43], carotenoids function as light scavengers for photosynthesis, absorbing light energy and transferring it to chlorophylls in an absorption range of 450-550 nm. Carotenoid levels could be explained by several factors: changes in enzymatic activities, damaged photosynthetic apparatus, inhibition of the electron transport chain, and changes in gene expression involved in the biosynthetic pathway [44]. In this study, the reduction in carotenoid content was probably due to a decrease in their biosynthesis and/or a degradation caused by NaCl-induced salinity stress.…”

Section: Protein Proline and Glycine-betaine Contentmentioning

confidence: 56%

Arbuscular Mycorrhizal Fungi Induce Tolerance to Salinity Stress in Taro Plantlets (Colocasia esculenta L. Schott) during Acclimatization

Baltazar-Bernal

Spinoso-Castillo

Mancilla-Álvarez

et al. 2022

Plants

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Soil salinity is a problem that affects soil fertility and threatens agri-food crop production worldwide. Biotechnology, through plant micropropagation and the use of biofertilizers such as arbuscular mycorrhizal fungi (AMF), is an alternative to increase productivity and induce tolerance to salinity stress in different crops. This study aimed to evaluate the effect of different doses of the fungus Glomus intraradices on the ex vitro development of taro (Colocasia esculenta L. Schott cv. Criolla) plantlets under salinity stress during the acclimatization stage. In vitro-obtained C. esculenta plantlets were inoculated at different doses (0, 100, and 200 spores per plantlet) of G. intraradices during acclimatization. At 60 d of acclimatization in the greenhouse, plantlets were exposed to 100 mM NaCl salinity stress for 10 d. After the stress period, plantlet development, colonization percentage, and biomass were evaluated. In addition, the content of chlorophyll, carotenoids, proteins, proline, glycine-betaine, soluble phenols, and antioxidant capacity were quantified. The results showed differences in the developmental, physiological, and biochemical variables evaluated; however, no changes in total protein content were observed. Spore colonization showed that the symbiotic association has positive effects on the development of plantlets with or without salinity stress. This symbiotic interaction contributes to salinity stress tolerance in C. esculenta plantlets. The early application of AMF in in vitro-obtained taro plantlets is an alternative to increase or maintain the productivity of this crop in saline soils.

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Section: Protein Proline and Glycine-betaine Contentmentioning

confidence: 56%

Arbuscular Mycorrhizal Fungi Induce Tolerance to Salinity Stress in Taro Plantlets (Colocasia esculenta L. Schott) during Acclimatization

Baltazar-Bernal

Spinoso-Castillo

Mancilla-Álvarez

et al. 2022

Plants

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“…For example, the lower Na + and higher K + accumulation observed in OA6 and OA62 ( Figure 3 and Figure 4 ) indicate the importance of these factors for the observed biomass values, which also lead to a lower Na + :K + molar ratio for these lines ( Figure 5 ); all these parameters are beneficial for salinity resistance [ 6 , 19 , 20 ]. The photosynthetic capacity and the ROS system are both important factors to maintain a good biomass production ([ 34 , 35 ]. However, if they were prone to contribute to the salinity stress in any of the lines are to be evaluated in further studies.…”

Section: Discussionmentioning

confidence: 99%

Improved Salinity Tolerance-Associated Variables Observed in EMS Mutagenized Wheat Lines

Lethin

Byrt

Berger

et al. 2022

IJMS

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Salinity tolerance-associated phenotypes of 35 EMS mutagenized wheat lines originating from BARI Gom-25 were compared. Vegetative growth was measured using non-destructive image-based phenotyping. Five different NaCl concentrations (0 to 160 mM) were applied to plants 19 days after planting (DAP 19), and plants were imaged daily until DAP 38. Plant growth, water use, leaf Na+, K+ and Cl− content, and thousand kernel weight (TKW) were measured, and six lines were selected for further analysis. In saline conditions, leaf Na+, K+, and Cl− content variation on a dry weight basis within these six lines were ~9.3, 1.4, and 2.4-fold, respectively. Relative to BARI Gom-25, two (OA6, OA62) lines had greater K+ accumulation, three (OA6, OA10, OA62) had 50–75% lower Na+:K+ ratios, and OA62 had ~30% greater water-use index (WUI). OA23 had ~2.2-fold greater leaf Na+ and maintained TKW relative to BARI Gom-25. Two lines (OA25, OA52) had greater TKW than BARI Gom-25 when grown in 120 mM NaCl but similar Na+:K+, WUI, and biomass accumulation. OA6 had relatively high TKW, high leaf K+, and WUI, and low leaf Na+ and Cl−. Phenotypic variation revealed differing associations between the parameters measured in the lines. Future identification of the genetic basis of these differences, and crossing of lines with phenotypes of interest, is expected to enable the assessment of which combinations of parameters deliver the greatest improvement in salinity tolerance.

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“…Salinity stress is one of the major impediments to rice production worldwide after drought ( Zahra et al, 2022 ). Rice is relatively a highly salt-sensitive crop ( Solis et al, 2022 ), as indicated by the rice threshold (dS/m) for salt stress ( Maas, 1996 ).…”

Section: Effects Of Salinity Stress On Ricementioning

confidence: 99%

Molecular tools, potential frontiers for enhancing salinity tolerance in rice: A critical review and future prospective

Rasheed

Nawaz

et al. 2022

Front. Plant Sci.

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Improvement of salinity tolerance in rice can minimize the stress-induced yield losses. Rice (Oryza sativa) is one of Asia’s most widely consumed crops, native to the subtropical regions, and is generally associated with sensitivity to salinity stress episodes. Salt-tolerant rice genotypes have been developed using conventional breeding methods; however, the success ratio is limited because of the complex nature of the trait and the high cost of development. The narrow genetic base of rice limited the success of conventional breeding methods. Hence, it is critical to launch the molecular tools for screening rice novel germplasm for salt-tolerant genes. In this regard, the latest molecular techniques like quantitative trait loci (QTL) mapping, genetic engineering (GE), transcription factors (TFs) analysis, and clustered regularly interspaced short palindromic repeats (CRISPR) are reliable for incorporating the salt tolerance in rice at the molecular level. Large-scale use of these potent genetic approaches leads to identifying and editing several genes/alleles, and QTL/genes are accountable for holding the genetic mechanism of salinity tolerance in rice. Continuous breeding practices resulted in a huge decline in rice genetic diversity, which is a great worry for global food security. However, molecular breeding tools are the only way to conserve genetic diversity by exploring wild germplasm for desired genes in salt tolerance breeding programs. In this review, we have compiled the logical evidences of successful applications of potent molecular tools for boosting salinity tolerance in rice, their limitations, and future prospects. This well-organized information would assist future researchers in understanding the genetic improvement of salinity tolerance in rice.

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Regulation of photosynthesis under salt stress and associated tolerance mechanisms

Cited by 169 publications

References 126 publications

Arbuscular Mycorrhizal Fungi Induce Tolerance to Salinity Stress in Taro Plantlets (Colocasia esculenta L. Schott) during Acclimatization

Arbuscular Mycorrhizal Fungi Induce Tolerance to Salinity Stress in Taro Plantlets (Colocasia esculenta L. Schott) during Acclimatization

Improved Salinity Tolerance-Associated Variables Observed in EMS Mutagenized Wheat Lines

Molecular tools, potential frontiers for enhancing salinity tolerance in rice: A critical review and future prospective

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