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Phenotypic plasticity of four Chenopodiaceae species with contrasting saline-sodic tolerance in response to increased salinity-sodicity.

ABSTRACT: It is unknown whether phenotypic plasticity in fitness-related traits is associated with salinity-sodicity tolerance. This study compared growth and allocation phenotypic plasticity in two species with low salinity-sodicity tolerance (Chenopodium acuminatum and C. stenophyllum) and two species with high salinity-sodicity tolerance (Suaeda glauca and S. salsa) in a pot experiment in the Songnen grassland, China. While the species with low tolerance had higher growth and allocation plasticity than the highly tolerant species, the highly tolerant species only adjusted their growth traits and maintained higher fitness (e.g., plant height and total biomass) in response to increased soil salinity-sodicity, with low biomass allocation plasticity. Most plasticity is "apparent" plasticity (ontogenetic change), and only a few traits, for example, plant height:stem diameter ratio and root:shoot biomass ratio, represent "real" plasticity (real change in response to the environment). Our results show that phenotypic plasticity was negatively correlated with saline-sodic tolerance and could be used as an index of species sensitivity to soil salinity-sodicity.

SUBMITTER: Huang Y

PROVIDER: S-EPMC6392380 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature

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Phenotypic plasticity of four Chenopodiaceae species with contrasting saline-sodic tolerance in response to increased salinity-sodicity.

Huang Yingxin Y Fan Gaohua G Zhou Daowei D Pang Jiayin J

Ecology and evolution 20190210 4

It is unknown whether phenotypic plasticity in fitness-related traits is associated with salinity-sodicity tolerance. This study compared growth and allocation phenotypic plasticity in two species with low salinity-sodicity tolerance (Chenopodium acuminatum and C. stenophyllum) and two species with high salinity-sodicity tolerance (Suaeda glauca and S. salsa) in a pot experiment in the Songnen grassland, China. While the species with low tolerance had higher growth an ...[more]

PMID: 30847054

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Project description:The present study was conducted to identify the novel QTLs controlling salinity and sodicity tolerance using indica MAGIC rice population. Phenotyping was carried out in salinity (EC ~ 10 dS/m) and sodicity (pH ~ 9.8) at the seedling stage. Among 391 lines, 43 and 98 lines were found tolerant and moderately tolerant to salinity. For sodicity condition, 2 and 45 lines were showed tolerance and moderately tolerance at seedling stage. MAGIC population was genotyped with the help of genotyping by sequencing (GBS) and filtered 27041SNPs were used for genome wide marker trait association studies. With respect to salinity tolerance, 25 SNPs were distributed on chromosomes 1, 5, 11 and 12, whereas 18 SNPs were mapped on chromosomes 6, 4 and 11 with LOD value of > 3.25 to sodicity tolerance in rice. The candidate gene analysis detected twelve causal genes including SKC1 gene at Saltol region for salinity and six associated genes for sodic stress tolerance. The significant haplotypes responsible for core histone protein coding gene (LOC_Os12g25120) and three uncharacterized protein coding genes (LOC_Os01g20710, LOC_Os01g20870 and LOC_Os12g22020) were identified under saline stress. Likewise, five significant haplotypes coding for ribose 5-phosphate isomerise (LOC_Os04g24140), aspartyl protease (LOC_Os06g15760), aluminum-activated malate transporter (LOC_Os06g15779), OsFBX421-Fbox domain containing protein (LOC_Os11g32940) and one uncharacterized protein (LOC_Os11g32930) were detected for sodic stress tolerance. The identified novel SNPs could be the potential candidates for functional characterization. These candidate genes aid to further understanding of genetic mechanism on salinity and sodicity stress tolerance in rice. The tolerant line could be used in future breeding programme to enhance the salinity and sodicity tolerance in rice.Supplementary informationThe online version contains supplementary material available at 10.1007/s12298-022-01174-8.

Dataset Information

Phenotypic plasticity of four Chenopodiaceae species with contrasting saline-sodic tolerance in response to increased salinity-sodicity.

Publications

Phenotypic plasticity of four Chenopodiaceae species with contrasting saline-sodic tolerance in response to increased salinity-sodicity.

Similar Datasets

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