Transport functions and expression analysis of vacuolar membrane aquaporins in response to various stresses in rice

Li, Guo-Wei; Peng, Yanhui; Yu, Xin; Zhang, Minhua; Cai, Weiming; Sun, Weining; Su, Wei-Ai

doi:10.1016/j.jplph.2008.05.002

Cited by 114 publications

(107 citation statements)

References 52 publications

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“…Katsuhara et al (2003) observed that HvPIP2; 1 expression was decreased in the roots of barley under NaCl stress, while transcription levels of HvPIP1; 3 and HvPIP1; 5 remained unchanged. Recently, Li et al (2008) reported that the expression of OsTIP1; 1, OsTIP1; 2, OsTIP2; 2, and OsTIP4; 3 was considerably induced under 150 mM NaCl treatment, and the transcription levels of OsTIP1; 1 and OsTIP1; 2 increased by 3-to 12-fold. Research on radish seedlings suggests that NaCl stress results in up-regulation of RsPIP2.1 expression, while polyethylene glycol treatment significantly down-regulates RsPIP2.1 expression (Suga et al, 2002).…”

Section: Discussionmentioning

confidence: 99%

“…A number of reports have demonstrated that aquaporins play a vital role in regulating plant water movement and cellular osmotic potential under stress conditions (Srivastava et al, 2010;Liu et al, 2012). Different responses have been observed in the transcript levels of aquaporins under drought, salinity, and cold stress (Suga et al, 2002;Jang et al, 2004;Li et al, 2008), and these are thought to contribute to water transport and stress tolerance of plants. For example, over expression of a wheat aquaporin gene (TaAQP8) in transgenic tobacco enhanced plant salt tolerance (Hu et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…For example, over expression of a wheat aquaporin gene (TaAQP8) in transgenic tobacco enhanced plant salt tolerance (Hu et al, 2012). Meanwhile, the responses of aquaporin isoforms to phytohormones (gibberellic acid and abscisic acid) have been observed in many species, including radish (Suga et al, 2002), maize (Zhu et al, 2005), rice (Li et al, 2008), and so on. Thus, there may be a relationship between aquaporin expression and ALA treatment in improving tomato salt tolerance.…”

Section: Introductionmentioning

confidence: 99%

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Effects of exogenous 5-aminolevulinic acid on photosynthesis, stomatal conductance, transpiration rate, and PIP gene expression of tomato seedlings subject to salinity stress

Zhao

Yan

et al. 2015

Genet. Mol. Res.

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ABSTRACT. The effects of exogenous 5-aminolevulinic acid (ALA) on photosynthesis, plant growth, and the expression of two aquaporin genes in tomato seedlings under control and salinity conditions were investigated. Exogenous ALA application significantly improved net photosynthetic rate (P n ), total chlorophyll content, and plant biomass accumulation of tomato seedlings under salinity stress. As revealed by real-time PCR analyses, after treatment with ALA alone, expression of both LePIP1 and LePIP2 in the two tomato cultivars was upregulated at 2 h and subsequently decreased to normal levels. Under salinity stress, transcript levels of LePIP1 in both leaves and roots of salt-sensitive cultivars (cv. Zhongza No.9) increased significantly and were considerably higher than in cultivars exposed to ALA alone. In contrast, the expression levels of LePIP1 and LePIP2 in cvs. Jinpeng No.1 cultivars were slightly lower under salinity stress than under ALA treatment. In addition, transcript levels of both LePIP1 and LePIP2 in the roots of Jinpeng No. 1 cultivars were considerably lower than those Y.Y. Zhao et al. 6402©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 14 (2): 6401-6412 (2015) in the roots of Zhongza No. 9 cultivars under salinity stress, regardless of ALA supplementation, implying that Jinpeng No. 1 cultivars had a better capacity to maintain membrane intrinsic protein stability. Further, ALA application distinctly counteracted the up-or down-regulation of LePIP1 and LePIP2 in both cultivars under salinity stress, in accordance with the improvements instomatal conductance, transpiration rate, and P n of tomato leaves. The results presented here indicate that ALA controls aquaporin expression, thus, presumably ALA regulates water homeostasis and enhances salt tolerance of tomato seedlings.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of exogenous 5-aminolevulinic acid on photosynthesis, stomatal conductance, transpiration rate, and PIP gene expression of tomato seedlings subject to salinity stress

Zhao

Yan

et al. 2015

Genet. Mol. Res.

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“…Studies using mercury as an aquaporin inhibitor or transgenic plants for specific aquaporins suggested that aquaporins significantly contribute to water uptake by roots (reviewed by Maurel et al, 2008). Extensive studies of the effects of the water conditions in the root zone (such as soil water deficit, high salinity, high osmolality, and flooding) on the function and regulation of aquaporins suggested marked effects of these environmental stresses on aquaporin abundance in the roots (Tournaire-Roux et al, 2003;Jang et al, 2004;Alexandersson et al, 2005;Boursiac et al, 2005;Bramley et al, 2007;Li et al, 2008;Mahdieh et al, 2008). However, relatively little information is available on how root aquaporins respond to fluctuating evaporative demand (Levin et al, 2009;Sakurai-Ishikawa et al, 2011;Almeida-Rodriguez et al, 2011;Kuwagata et al, 2012;Vandeleur et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Rice Plants Sense Daily Weather and Regulate Aquaporin Gene Expressions in the Roots -Close correlation with potential evaporation-

Murai-Hatano

Kuwagata

Hayashi

et al. 2015

J. Agric. Meteorol.

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Transpiration, the evaporation from aerial parts of plants, is major driving force for the roots to uptake water from the soil. Aquaporins, the water channel proteins, are thought to play crucial roles in regulation of root hydraulic conductivity. Here we demonstrate that the evaporative demand plays a dominant role in the induction of specific aquaporins in rice (Oryza sativa) roots in seedlings grown hydroponically and then transferred to an open field. We found that the abundance of the root-specific aquaporin transcripts, OsPIP2;4, OsPIP2;5 and OsTIP2;1 at 8 a.m. is highly correlated with the evaporative demand in the morning (evaluated from potential evaporation averaged over 4 h before root sampling). Aquaporin isoforms with higher correlation to potential evaporation showed higher diurnal amplitude of their expression. Our study suggests that rice plants sense daily weather and responded to it by adjusting the expression of specific root aquaporin genes.

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“…Se ha observado que la actividad de transporte de las acuaporinas de la subfamilia PIP2 es más efectiva que la de PIP1, al menos en oocitos de Xenopus (Li et al 2008, Moshelion et al 2002, Chaumont et al 2000, Fetter et al 2004, Sakr et al 2003, Katsuhara et al 2002, Mahdieh et al 2008, Johansson et al 1998, Almeida-Rodriguez et al 2010. Sin embargo, las acuaporinas PIP1 se han mostrado cruciales en el transporte de agua en raíces de tabaco.…”

Section: Efecto De La Expresión De Acuaporinasunclassified

Conductancia Hidráulica en Patrones De Cítricos

Gamir¹

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RESUMENLa conductancia hidráulica determina la capacidad de transporte de agua afectando a las relaciones hídricas de la planta así como a la eficiencia de absorción de agua y nutrientes. Los patrones de cítricos difieren en su conductancia hidráulica debido a diferencias en la anatomía de los elementos vasculares o en la distribución del sistema radical pudiendo ser el principal factor que regula el desarrollo de los frutos y la respuesta de la planta a situaciones de estrés. Las relaciones hídricas pueden verse alteradas por estreses abióticos como el déficit hídrico, la salinidad o la asfixia radical. Recientes estudios realizados en especies no cítricas demuestran que las acuaporinas intervienen de manera importante en las relaciones hídricas de la planta y que los estímulos ambientales pueden regular su expresión. Ésta, a su vez, puede estar regulada por el pH citosólico.Por tanto, el principal objetivo de la presente tesis fue estudiar la conductancia hidráulica de los patrones de cítricos, determinando su influencia en la transpiración, los factores que la regulan y su papel en la respuesta de la planta a las situaciones de estrés abiótico.En los ensayos realizados, se utilizaron distintos patrones injertados y sin injertar. Se observaron diferencias en la capacidad de absorción de agua de los diferentes patrones, la cual tuvo una marcada influencia en el proceso de transpiración de la planta. La conductancia hidráulica se relacionó tanto con la expresión de acuaporinas como con la anatomía del xilema. Por otra parte, en condiciones de estrés hídrico se demostró que las características hidráulicas del patrón pueden determinar el grado de tolerancia de la planta a este estrés. Al someter las plantas a estrés salino se observó que la diferencia en la expresión de acuaporinas entre genotipos de cítricos afecta a la exclusión de cloruro de las hojas, determinando así su tolerancia a la salinidad. Por último, en condiciones de asfixia radical se demostró que la acidosis inducida por este estrés inhibe la expresión de las acuaporinas causando una reducción de la conductancia hidráulica que provoca el cierre estomático. RESUMLa conductància hidràulica determina la capacitat de transport d'aigua afectant a les relacions hídriques de la planta així com l'eficiència d'absorció d'aigua i nutrients. Els patrons de cítrics difereixen en la seua conductància hidràulica a causa de diferències en l'anatomia dels elements vasculars o en la distribució del sistema radical podent ser el principal factor que regula el desenvolupament dels fruits i la resposta de la planta a situacions de estrès. Les relacions hídriques es poden vore alterades per estressos abiòtics com el dèficit hídric, la salinitat o l'asfíxia radical. Recents estudis realitzats en espècies no cítriques demostren que les aquaporines intervenen de manera important en les relacions hídriques de la planta i que els estímuls ambientals poden regular la seua expressió. Aquesta, al seu torn, pot estar regulada pel pH del citosol.Per tant, el principal objectiu ...

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Transport functions and expression analysis of vacuolar membrane aquaporins in response to various stresses in rice

Cited by 114 publications

References 52 publications

Effects of exogenous 5-aminolevulinic acid on photosynthesis, stomatal conductance, transpiration rate, and PIP gene expression of tomato seedlings subject to salinity stress

Effects of exogenous 5-aminolevulinic acid on photosynthesis, stomatal conductance, transpiration rate, and PIP gene expression of tomato seedlings subject to salinity stress

Rice Plants Sense Daily Weather and Regulate Aquaporin Gene Expressions in the Roots -Close correlation with potential evaporation-

Conductancia Hidráulica en Patrones De Cítricos

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