Regulation of Seed Germination and the Role of Aquaporins under Abiotic Stress

Kshetrimayum, Erina; Sahoo, Debee Prasad; Panda, Sanjib Kumar

doi:10.22161/ijeab/2.2.7

Cited by 6 publications

(4 citation statements)

References 43 publications

(26 reference statements)

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“…Heavy metals can block aquaporins by binding to a cysteine residue close to the pore of the protein (Daniels et al 1994) thereby impeding water uptake by seed cells and limiting seed imbibition (Cardoso et al 2015;Lefèvre et al 2009). Similar effects have been observed in Pisum sativum under HgCl2 and ZnCl2 stresses (Kshetrimayum et al 2017). Furthermore, enzymes participating in reserve mobilization, such as α-and β-amylases, proteases, leucine amino peptidases as well as cysteine-, aspartic-, and metallo-proteases, are altered by heavy metals, resulting in lower enzyme activity that has a negative effect on germination (Seneviratne et al 2017).…”

Section: Heavy Metalssupporting

confidence: 66%

How Silicon Alleviates the Effect of Abiotic Stresses During Seed Germination: A Review

Moukhtari

Ksiaa

Zorrig

et al. 2022

J Plant Growth Regul

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Rapid synchronized seed germination is desirable to ensure seedling establishment and improve crop yield.However, abiotic stresses from drought, salinity, and heavy metals have a negative impact on seed germination.The application of silicon (Si) has emerged as a promising approach for improving seed germination, especially under unfavorable conditions. However, the mechanisms of Si action have not been systematically studied in germinating seeds under conditions of abiotic stress. Considering the potential importance of sustainable agriculture, here we review recent findings of how seeds of numerous species, including several important crops, respond to Si treatment under abiotic stress. Exogenous Si has multiple effects on embryo viability, reserve mobilization, hormone/enzyme activity, membrane integrity, antioxidant metabolism, and regulation of gene expression in seed germination.

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Section: Heavy Metalssupporting

confidence: 66%

How Silicon Alleviates the Effect of Abiotic Stresses During Seed Germination: A Review

Moukhtari

Ksiaa

Zorrig

et al. 2022

J Plant Growth Regul

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“…Proteins referred to as AQPs are known to represent an important component of the regulatory machinery used by plants for this purpose. AQPs have been shown to exert control over germination, since pea seeds imbibed in the presence of the AQP inhibitor mercury do not germinate [6]. The correlation established between the elongation of the Ricinus communis seedling hypocotyl and the abundance of the AQP-encoding gene PIP2-1 has been taken to imply that AQPs also have a role in seedling growth [7].…”

Section: Introductionmentioning

confidence: 99%

Gene-Wide Analysis of Aquaporin Gene Family in Malus domestica and Heterologous Expression of the Gene MpPIP2;1 Confers Drought and Salinity Tolerance in Arabidposis thaliana

Liu

Yang

Xin

et al. 2019

IJMS

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The aquaporins (AQPs) are a family of integral membrane proteins involved in the transcellular membrane transport of water and other small molecules. A scan of the apple (Malus domestica) genome revealed the presence of 42 genes encoding putative AQPs. Based on a phylogenetic analysis of the deduced peptide sequences of the AQPs generated by Arabidopsis thaliana, poplar (Populus trichocarpa), and rubber (Hevea brasiliensis), the apple AQPs were each assigned membership of the five established AQP subfamilies, namely the PIPs (eleven members), the TIPs (thirteen members), the NIPs (eleven members), the SIPs (five members), and the XIPs (two members). The apple AQPs included asparagine-proline-alanine (NPA) motifs, an aromatic/arginine (ar/R) selectivity filter, and the Froger’s positions. The heterologous expression of MpPIP2;1 in A. thaliana was shown to enhance the level of tolerance exhibited against both drought and salinity.

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“…Field crops are most susceptible to osmotic stress in the early stages of growth (Yadav et al., 2019). Salinity may delay or even prevent the germination of seeds (Ahmed et al., 2019), particularly growth of the radicle (Kshetrimayum, Sahoo, Mitra, & Panda, 2017). Uniform germination and establishment of crops depend on the quality of the seed planted and the conditions under which the seed was planted (Acquaah, 2002).…”

Section: Introductionmentioning

confidence: 99%

Effect of salinity on the germination of wheat and barley in South Africa

Bagwasi

Agenbag

Swanepoel

2020

Crop Forage & Turfgrass Mgmt

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Field crops are most susceptible to salt stress in the early stages of growth. There is a general belief that barley (Hordeum vulgare L.) is more salt‐tolerant than wheat (Triticum aestivum L.), yet little is known regarding the response of different South African wheat and barley cultivars to saline conditions. An experiment was conducted to study the effects of salinity on seed germination in three South African spring wheat cultivars (SST 027, SST 056, and SST 087) and three spring barley cultivars (Nemesia, Erica, and Hessekwa). The experiment was conducted in petri dishes in a growth incubator at a constant temperature of 20 °C for 7 d. Seeds were exposed to five NaCl solutions with electrical conductivity (EC) levels of 4, 8, 12, 16, and 20 dS m−1 and were compared with those exposed to a solution with an EC of 0 dS m−1 (distilled water), which served as a control. The experiment design was a completely randomized design. The study showed that salinity influenced seed germination in all wheat and barley cultivars. Although all cultivars showed a reduction in total germination percentage with increasing salinity from EC levels of 0 to 20 dS m−1, the differences were only significant (P < .05) at high EC levels (16–20 dS m−1). Wheat cultivars outperformed barley cultivars at EC levels of 0, 4, 8, 12, and 16 dS m−1. The study showed that salinity influenced seed germination in both wheat and barley, but barley was less salt‐tolerant during germination than wheat.

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Regulation of Seed Germination and the Role of Aquaporins under Abiotic Stress

Abstract: Abstract-

Cited by 6 publications

References 43 publications

How Silicon Alleviates the Effect of Abiotic Stresses During Seed Germination: A Review

How Silicon Alleviates the Effect of Abiotic Stresses During Seed Germination: A Review

Gene-Wide Analysis of Aquaporin Gene Family in Malus domestica and Heterologous Expression of the Gene MpPIP2;1 Confers Drought and Salinity Tolerance in Arabidposis thaliana

Effect of salinity on the germination of wheat and barley in South Africa

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