Aquaporins and cell growth

Obroucheva, N. V.; Sinkevich, I.A.

doi:10.1134/s1021443710020019

Cited by 34 publications

(23 citation statements)

References 61 publications

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“…Water transport is known to be controlled by water channel proteins, aquaporins (AQPs) which belong to membrane intrinsic proteins (MIPs) family. In plants, AQP mediated water transport has been implicated to play a major role in varied biological processes such as seed germination (Liu et al 2015), cell elongation (Obroucheva and Sinkevich 2010) and leaf hydraulic and stomatal conductance (Pou et al 2013). To date, AQPs are divided into plasma membrane intrinsic proteins (PIPs), tonoplast intrinsic proteins (TIPs), nodulin-like intrinsic proteins (NIPs), small basic intrinsic proteins (SIPs), unclassified X intrinsic proteins (XIPs), homologue of the Escherichia coli intrinsic protein GlpF (GIPs), hybrid intrinsic proteins (HIPs) (Anderberg et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Integrated approaches to study the drought tolerance mechanism in hot pepper (Capsicum annuum L.)

Sahitya¹,

Krishna²,

Suneetha

2019

Physiol Mol Biol Plants

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Drought is one of the predominant abiotic stresses which have phenomenal impact on crop productivity. Alterations in aquaporin gene expressions are part of complex molecular responses by plant in response to drought. To better understand the role of aquaporins in economically important crop chilli (Capsicum annuum), drought induced gene expression of twelve aquaporins was determined in drought tolerant-KCa-4884 and drought susceptible-G-4 genotypes. Conjointly, the effect of drought on leaf water status and photosynthetic parameters were evaluated. Gene expression of all examined 12 aquaporins was up-regulated in KCa-4884 and in contrast, all the aquaporin genes were down-regulated in G-4 under drought stress. Significant variations among two chilli genotypes have been recorded in photosynthetic rate (P n), stomatal conductance (G s), and relative water content (RWC), sub-stomatal CO 2 concentration (C i). KCa-4884 revealed significantly high rates of P n and RWC and decreased G s under water deficit conditions providing evidence for superior drought adaptive strategies. Differences in physiological parameters illustrate prevention of water loss during drought. Up-regulation of aquaporins in drought tolerant genotype implicates their possible role in water relations and photosynthetic performance even under extended drought conditions.

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Section: Introductionmentioning

confidence: 99%

Integrated approaches to study the drought tolerance mechanism in hot pepper (Capsicum annuum L.)

Sahitya¹,

Krishna²,

Suneetha

2019

Physiol Mol Biol Plants

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“…The role of AQPs in increasing membrane permeability to facilitate the mobilization of water and other small molecules essential for plant growth and development has been well documented [ 6 ]. AQPs are important in many processes for example, seed germination [ 14 ], leaf hydraulic and stomatal conductance [ 15 ] and cell elongation [ 16 ]. Their physiological role has been demonstrated in several studies on different species.…”

Section: Introductionmentioning

confidence: 99%

Genome-Wide Identification and Transcriptional Regulation of Aquaporin Genes in Bread Wheat (Triticum aestivum L.) under Water Stress

Madrid-Espinoza

Brunel-Saldias

Guerra

et al. 2018

Genes

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Aquaporins (AQPs) are transmembrane proteins essential for controlling the flow of water and other molecules required for development and stress tolerance in plants, including important crop species such as wheat (Triticum aestivum). In this study, we utilized a genomic approach for analyzing the information about AQPs available in public databases to characterize their structure and function. Furthermore, we validated the expression of a suite of AQP genes, at the transcriptional level, including accessions with contrasting responses to drought, different organs and water stress levels. We found 65 new AQP genes, from which 60% are copies expanded by polyploidization. Sequence analysis of the AQP genes showed that the purifying selection pressure acted on duplicate genes, which was related to a high conservation of the functions. This situation contrasted with the expression patterns observed for different organs, developmental stages or genotypes under water deficit conditions, which indicated functional divergence at transcription. Expression analyses on contrasting genotypes showed high gene transcription from Tonoplast Intrinsic Protein 1 (TIP1) and 2 (TIP2), and Plasma Membrane Intrinsic Protein 1 (PIP1) and 2 (PIP2) subfamilies in roots and from TIP1 and PIP1 subfamilies in leaves. Interestingly, during severe drought stress, 4 TIP genes analyzed in leaves of the tolerant accession reached up to 15-fold the level observed at the susceptible genotype, suggesting a positive relationship with drought tolerance. The obtained results extend our understanding of the structure and function of AQPs, particularly under water stress conditions.

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“…Our results showed that the expression of some MYBs (comp13318 c0 seq1 and comp16211 c0 seq1) was higher in the vascular cambium during the VC3 and VC 13 stages compared to that at VC35, which was further supported by the fact that MYBs are involved in the regulation of vascular differentiation. Aquaporins are known to be enriched in zones where cells are rapidly dividing or expanding (Obroucheva and Sin'kevich, 2010). Interestingly, we identified transcripts corresponding to some aquaporins (comp36672 c0 seq4 and comp41222 c0 seq1), which were more abundant at the VC13 stages, as indicated by the results of RNA-Seq and RT-qPCR analyses.…”

Section: Genome-wide Expression Profiling Uncovered Developmental Modmentioning

confidence: 66%

Transcriptional regulation of vascular cambium activity during the transition from juvenile to mature stages in Cunninghamia lanceolata

Cao

Feng

et al. 2016

Journal of Plant Physiology

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Aquaporins and cell growth

Cited by 34 publications

References 61 publications

Integrated approaches to study the drought tolerance mechanism in hot pepper (Capsicum annuum L.)

Integrated approaches to study the drought tolerance mechanism in hot pepper (Capsicum annuum L.)

Genome-Wide Identification and Transcriptional Regulation of Aquaporin Genes in Bread Wheat (Triticum aestivum L.) under Water Stress

Transcriptional regulation of vascular cambium activity during the transition from juvenile to mature stages in Cunninghamia lanceolata

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