Improving Salt Tolerance in Rice: Looking Beyond the Conventional

Vinod, K. K.; Krishnan, S. Gopala; Babu, N. Naresh; Nagarajan, M.; Singh, Ashok Kumar

doi:10.1007/978-1-4614-6108-1_10

Cited by 34 publications

(29 citation statements)

References 192 publications

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“…CmHSFA4 enhanced tolerance to salinity in chrysanthemum is a consequence of ion homeostasis Ion transport is the basic factor determining salinity tolerance. Along with ion uptake and transport, sequestration and extrusion, Na + -K + homeostasis governs the principal mechanisms of salt tolerance in plants (Vinod et al, 2013). Transcript accumulation of ion homeostasis-associated genes served as the main regulators under salinity (Parvaiz and Satyawati, 2014).…”

Section: Discussionmentioning

confidence: 99%

Chrysanthemum CmHSFA4 gene positively regulates salt stress tolerance in transgenic chrysanthemum

Zhang

Zhao

et al. 2018

Plant Biotechnology Journal

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SummarySalinity‐induced Na+ toxicity and oxidative stress hamper plant growth. Here, we showed that expression of the chrysanthemum CmHSFA4, a homologue of the heat‐shock factor AtHSFA4a, is inducible by salt and localizes to the nucleus. It is a transcription activator binding with HSE. Chrysanthemum overexpressing CmHSFA4 displayed enhanced salinity tolerance by limiting Na+ accumulation while maintaining K+ concentration, which is consistent with the up‐regulation of ion transporters CmSOS1 and CmHKT2. Additionally, the transgenic plants reduced H2O2 and O2 ∙− accumulation under salinity, which could be due to up‐regulation of ROS scavenger activities such as SOD, APX and CAT as well as CmHSP70, CmHSP90. Together, these results suggest that CmHSFA4 conferred salinity tolerance in chrysanthemum as a consequence of Na+/K+ ion and ROS homeostasis.

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Section: Discussionmentioning

confidence: 99%

Chrysanthemum CmHSFA4 gene positively regulates salt stress tolerance in transgenic chrysanthemum

Zhang

Zhao

et al. 2018

Plant Biotechnology Journal

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“…Independently of the chosen crop species, there are varieties better adapted to salinization because their phenology allows them to avoid critical periods of the year like summer, when evaporation from the soil increases bringing up salts to the upper soil layers. It is thus essential to develop varieties that are phenologically capable of sustaining excess salt throughout its life span and still produce high yields [129]. The use of microorganisms (Trichoderma harzianum isolate T78 and Pseudomonas stutzeri) has been proposed also as a mean to enhance soil microbiological diversity and mitigate salinity effects on plant growth [54,130,131].…”

Section: Salinity Tolerant Crops and Rootstocksmentioning

confidence: 99%

A Review of Soil-Improving Cropping Systems for Soil Salinization

et al. 2019

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A major challenge of the Sustainable Development Goals linked to Agriculture, Food Security, and Nutrition, under the current global crop production paradigm, is that increasing crop yields often have negative environmental impacts. It is therefore urgent to develop and adopt optimal soil-improving cropping systems (SICS) that can allow us to decouple these system parameters. Soil salinization is a major environmental hazard that limits agricultural potential and is closely linked to agricultural mismanagement and water resources overexploitation, especially in arid climates. Here we review literature seeking to ameliorate the negative effect of soil salinization on crop productivity and conduct a global meta-analysis of 128 paired soil quality and yield observations from 30 studies. In this regard, we compared the effectivity of different SICS that aim to cope with soil salinization across 11 countries, in order to reveal those that are the most promising. The analysis shows that besides case-specific optimization of irrigation and drainage management, combinations of soil amendments, conditioners, and residue management can contribute to significant reductions of soil salinity while significantly increasing crop yields. These results highlight that conservation agriculture can also achieve the higher yields required for upscaling and sustaining crop production.

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“…For example, the Indo-Gangetic Basin in India and the Indus Basin in Pakistan suffer losses in rice yield as high as 45% and 36–69%, respectively, from soil salinity14. Moreover, climate change is foreseen to increase saltwater ingress in coastal regions of Southeast Asia, where rice is the primary cultivated crop5. With the global population rising, a 26% increase in rice yield is predicted to be required to meet global demands in the next 25 years6.…”

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confidence: 99%

Salinity tolerance loci revealed in rice using high-throughput non-invasive phenotyping

et al. 2016

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High-throughput phenotyping produces multiple measurements over time, which require new methods of analyses that are flexible in their quantification of plant growth and transpiration, yet are computationally economic. Here we develop such analyses and apply this to a rice population genotyped with a 700k SNP high-density array. Two rice diversity panels, indica and aus, containing a total of 553 genotypes, are phenotyped in waterlogged conditions. Using cubic smoothing splines to estimate plant growth and transpiration, we identify four time intervals that characterize the early responses of rice to salinity. Relative growth rate, transpiration rate and transpiration use efficiency (TUE) are analysed using a new association model that takes into account the interaction between treatment (control and salt) and genetic marker. This model allows the identification of previously undetected loci affecting TUE on chromosome 11, providing insights into the early responses of rice to salinity, in particular into the effects of salinity on plant growth and transpiration.

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Improving Salt Tolerance in Rice: Looking Beyond the Conventional

Cited by 34 publications

References 192 publications

Chrysanthemum CmHSFA4 gene positively regulates salt stress tolerance in transgenic chrysanthemum

Chrysanthemum CmHSFA4 gene positively regulates salt stress tolerance in transgenic chrysanthemum

A Review of Soil-Improving Cropping Systems for Soil Salinization

Salinity tolerance loci revealed in rice using high-throughput non-invasive phenotyping

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