Genetic diversity, population structure and gene flow pattern among populations of Lasiurus sindicus Henr. - an endemic, C4 grass of Indian Thar desert

Goswami, Bhuwnesh; Rankawat, Rekha; Wahlang, Daniel Regie; Gadi, B. R.; Rao, Satyawada Rama

doi:10.1016/j.plgene.2019.100206

Cited by 6 publications

(4 citation statements)

References 35 publications

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“…Low and erratic rainfall with recurrent of drought is common characteristic of this region. Distribution of the perennial grass is mainly restricted to hot desert region in low rainfall (below 250 mm) area of the Jaisalmer, Bikaner, Barmer and Jodhpur district of Rajasthan state (Goswami et al 2020). Due to perennial and survival in drought, it is a valuable nutritious grass for fodder production with a low cost in natural habitat of this region.…”

Section: Introductionmentioning

confidence: 99%

“…Due to perennial and survival in drought, it is a valuable nutritious grass for fodder production with a low cost in natural habitat of this region. Besides a fodder uses, this grass is important in soil binding, nitrogen fixing bacteria inhabiting in roots, improving the rangeland production, natural habitat for endangered and threatened fauna and flora of Thar desert (Bhandari 1990;Goswami et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Sewan grass is considered more salt-sensitive grass than native grasses, and salinity negatively affected the morphophysiological parameters such as germination, seedling growth, leaf area, plant height, pigments, chlorophyll stability index (CSI) and biomass (Naz et al 2009;Gadi and Goswami 2016). Although the grass grows predominantly in dry sandy habitat but currently, severe overgrazing, changes in the land-use patterns, increased aridity, sequential droughts, genetics and other factors cause depletion of the population and distribution of this grass in the delicate ecosystem of the Thar (Yadava et al 2018;Goswami et al 2020).…”

Section: Introductionmentioning

confidence: 99%

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Physiological and antioxidative responses associated with drought tolerance of Lasiurus sindicus Henr. endemic to Thar desert, India

2020

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Sewan (Lasiurus sindicus Henr.) is an endemic fodder grass of low rainfall sandy habitat of hot Indian Thar desert. To understand drought responses and tolerance mechanism in Lasiurus sindicus, seedling growth, root cell viability, changes in enzymatic antioxidants and oxidative injury were assayed at early stage of seedlings in polyethylene glycol (PEG) 6000 (5, 10 and 20%)-induced drought stress. The reduction of seed germination, seedling growth, relative water content and vigor index was found with high level of PEG (10-20%), while 5% PEG slightly increased the germination and the growth parameters. A decline in pigments (Chl a, Chl b, total Chl, carotenoids), chlorophyll stability index, membrane stability index and protein content was observed, which was correlated with increased level of malondialdehyde, an indicator of excess reactive oxygen species. Results showed that increasing level of PEG activated the antioxidative enzymes, superoxide dismutase, peroxidase and catalase. Non-enzymatic antioxidants (ascorbate, phenols) and accumulation of cytosolutes (proline and sugar) for regulation of growth, osmotic potential and reactive oxygen species in drought tolerance. Overall results showed that seeds have adaptive mechanisms for germination and growth under lower level of drought, while increasing drought stress reduced growth potential of L. sindicus. It exhibited drought tolerance features, enhancement in activity of antioxidative enzyme and cytosolutes accumulation which involved in regulation of oxidative damage and osmotic adjustment for survival of the seedlings. Furthermore, our results provide important information about the physiological and antioxidative responses of the seedlings and mechanism associated with drought tolerance of L. sindicus.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Physiological and antioxidative responses associated with drought tolerance of Lasiurus sindicus Henr. endemic to Thar desert, India

2020

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“…The relatively isolated ecological environment of wild types might reduce the genetic interference from other MO varieties. A narrow genetic diversity of cultivars not only limited the breeding process of MO, but also increased the risk of natural disasters [ 53 , 54 ]. The wild type plants and landraces could provide valuable genetic resources for breeding programs, both them could be used for the breeding of new MO varieties to broaden genetic background.…”

Section: Discussionmentioning

confidence: 99%

Phenotypic, chemical component and molecular assessment of genetic diversity and population structure of Morinda officinalis germplasm

et al. 2022

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Background Morinda officinalis How (MO) is a perennial herb distributed in tropical and subtropical regions, which known as one of the “Four Southern Herbal Medicines”. The extent of genetic variability and the population structure of MO are presently little understood. Here, nine morphological traits, six chemical components and Single nucleotide polymorphism (SNP) markers were used in integrative research of MO germplasm variation among 88 individuals collected from ten populations across four geographical provinces of China. Results Both phenotype and chemical composition have significant genetic variation, and there is a certain correlation between them such as root diameter and the nystose content, as well as geographical distribution. The principal component analysis (PCA) showed the leaf length, leaf width, nystose, 1F-furanosaccharide nystose, and the section color were the major contributors to diversity. The cluster analysis based on phenotypic and oligosaccharide data distinguished three significant groups, which was consistent with the result of a corresponding analysis with 228,615 SNP markers, and importantly, they all showed a significant correlation with geographical origin. However, there was little similarity between two cluster results. The Shannon’s information index (I) varied from 0.17 to 0.53 with a mean of 0.37, suggesting a high level of genetic diversity in MO populations, which mainly existed among individuals within populations, accounting for 99.66% of the total according to the analysis of molecular variance (AMOVA) results. Each population also maintains the connection because of certain gene communication, so that the genetic differentiation between populations was not very significant. The STRUCTURE software was used to analyse the population structure and the result showed that 88 accessions were clustered into three groups, and 67% of them were pure type, which was also confirmed through PCA. Conclusions The comprehensive study of phenotypic, chemical and molecular markers will provide valuable information for future breeding plans and understanding the phylogenetic relationship of MO population.

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Assessment of Genetic Diversity and Population Structure of Dipcadi erythraeum from Indian Thar Desert Using SCoT Markers

et al. 2023

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Genetic diversity, population structure and gene flow pattern among populations of Lasiurus sindicus Henr. - an endemic, C4 grass of Indian Thar desert

Cited by 6 publications

References 35 publications

Physiological and antioxidative responses associated with drought tolerance of Lasiurus sindicus Henr. endemic to Thar desert, India

Physiological and antioxidative responses associated with drought tolerance of Lasiurus sindicus Henr. endemic to Thar desert, India

Phenotypic, chemical component and molecular assessment of genetic diversity and population structure of Morinda officinalis germplasm

Assessment of Genetic Diversity and Population Structure of Dipcadi erythraeum from Indian Thar Desert Using SCoT Markers

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