Polyethylene glycol induced drought stress strongly influences seed germination, root morphology and cytoplasm of different kenaf genotypes

Tang, Danfeng; Fan, Wei; Qin, Sixian; Khan, Aziz; Kashif, Muhammad; Zhou, Ran

doi:10.1016/j.indcrop.2019.01.019

Cited by 41 publications

(22 citation statements)

References 12 publications

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“…Under water stress, plants partitioned more photosynthates for the growth of roots rather than shoots to help in the absorption of more water from deeper surfaces (Babu et al, 2014). The findings of the present study is also in line with earlier studies where seedling root length, root surface area, root volume, number of tips and root dry weight were significantly impacted by drought stress and genotype in kenaf at 0, 10 and 20% PEG concentration (Tang et al, 2019).…”

Section: Discussionsupporting

confidence: 92%

Screening for drought tolerance in cotton (Gossypium hirsutum L.) using in vitro technique

Jaafar¹,

Mohammed²,

Mohammed³

2021

J. Dryland Agric.

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Section: Discussionsupporting

confidence: 92%

Screening for drought tolerance in cotton (Gossypium hirsutum L.) using in vitro technique

Jaafar¹,

Mohammed²,

Mohammed³

2021

J. Dryland Agric.

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“…At least three plants from each treatment were taken for the measurement of fresh weight, dry weight, plant height, and soil and plant analyzer development (SPAD) (SPAD-502 Chlorophyll Meter) values. Root morphological indexes were determined using the root analyze system (WinRHIZO, Regent, Canada) ( Tang et al, 2019 ). Soluble sugar and soluble pectin were measured using Plant Soluble Sugar and Pectin Kits (Suzhou Grace Biotechnology Co. Ltd., Suzhou, China).…”

Section: Methodsmentioning

confidence: 99%

Identification of Differentially Expressed Genes and Pathways Involved in Growth and Development of Mesona chinensis Benth Under Red- and Blue-Light Conditions

et al. 2021

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Mesona chinensis Benth (MCB) is an important Chinese herbal medicine. The plant factories might be one of the ways to solve the shortage of MCB supply. In this study, the MCB seedlings were treated under the red (R) and blue (B) lights in the plant factory. Results showed that the red light promoted the growth and development of MCB in comparison with the blue light. Under the red-light condition, the biomass, plant height, and root characteristics were significantly higher than those under blue-light condition, while the soil and plant analyzer development (SPAD) under the red-light treatment was significantly lower than that under the blue-light treatment. Red light also significantly promoted the content of soluble sugar and pectin of MCB compared with blue light. Transcriptome analysis showed that a total of 4,165 differentially expressed genes (DEGs) were detected including 2,034 upregulated and 2,131 downregulated. Of these, 1,112 DEGs including 410 upregulated and 702 downregulated genes were associated with 111 pathways. Moreover, a total of 8,723 differentially expressed transcription factors (TFs) were identified in R vs. B, and these TFs were distributed in 56 gene families. Metabonomic results revealed that a total of 184 metabolites and 99 differentially expressed metabolites (DEMs) (42 upregulated and 57 downregulated) were identified in the red- and blue-light treatments. Integrative analysis of transcriptome and metabolome unveiled that a total of 24 pathways included 70 compounds (metabolites) and were associated with 28 unigenes. In particular, these pathways included starch and sucrose metabolism, phenylpropanoid biosynthesis, cysteine and methionine metabolism, glycolysis/gluconeogenesis, and pentose and glucuronate interconversions. The unigenes included asparagine synthetase (AS), thymidine kinase (TK), alpha, alpha-trehalose-phosphate synthase (TPS), phosphatase IMPL1 (IMPL1), dihydroflavonol 4-reductase (D4R), and 4-coumarate-CoA ligase-like 6 (4CL6), bifunctional aspartokinase-homoserine dehydrogenase 1 (thrA), and abscisic acid 8′-hydroxylase 2 isoform X1 (ABA8). It was indicated that these pathways and genes might play important roles in the growth and development of MCB. This study laid a foundation for the future research of MCB.

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“…For seed germination of industrial crops in arid and semi-arid regions, drought and salinity stresses are the main limitation factors (Rasheed et al, 2019). Drought and salinity can delay or completely inhibit germination (Zhu et al, 2006;Toscano et al, 2017;Hu et al, 2018;Tang et al, 2019). Seeds must first imbibe an adequate amount of water to start germination process, which depends on the osmotic pressure of soil (Wuest, 2007).…”

Section: Introductionmentioning

confidence: 99%

Storage Period and Different Abiotic Factors Regulate Seed Germination of Two Apocynum Species — Cash Crops in Arid Saline Regions in the Northwestern China

et al. 2021

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On degraded land in arid regions, cultivation of Apocynum species can provide significant environmental benefits by preventing soil erosion and desertification. Furthermore, Apocynum venetum and Apocynum pictum, which are mainly distributed in salt-barren lands in the northwestern region of China, are traditionally used to produce natural fiber and herbal tea. Direct sowing of both species may encounter various abiotic stresses such as drought and salinity. However, these effects on germination remain largely unknown, especially for seeds with different storage periods. The aim of this study was to evaluate the effects of storage period, light condition, temperature regime, drought, and salinity on germination performances of both species. Germination experiment was carried out in November 2017. There were four replicates for each treatment, and each petri dish contained 25 seeds. The results indicated that prolongation of storage period significantly decreased the germination percentage and velocity, especially under abiotic stresses. Light did not affect seed germination of A. venetum and A. pictum under any conditions. Seeds had better germination performance at 10/25 and 15/30°C than those of seeds incubated at any other temperatures. With the increase of polyethylene glycol (PEG) and salinity concentrations, seed germination for both species gradually decreased, especially for seeds stored for 2 years. Low PEG (0–20%) and salinity concentration (0–200 mM) did not significantly affect germination percentage of freshly matured seeds. However, long-time storage significantly decreased drought and salinity tolerance in A. venetum and A. pictum during germination stage. For saline soils in arid and semi-arid regions, freshly matured seeds or 1-year-stored seeds of both Apocynum species are recommended to be sown by using drip-irrigation in spring.

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Polyethylene glycol induced drought stress strongly influences seed germination, root morphology and cytoplasm of different kenaf genotypes

Cited by 41 publications

References 12 publications

Screening for drought tolerance in cotton (Gossypium hirsutum L.) using in vitro technique

Screening for drought tolerance in cotton (Gossypium hirsutum L.) using in vitro technique

Identification of Differentially Expressed Genes and Pathways Involved in Growth and Development of Mesona chinensis Benth Under Red- and Blue-Light Conditions

Storage Period and Different Abiotic Factors Regulate Seed Germination of Two Apocynum Species — Cash Crops in Arid Saline Regions in the Northwestern China

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