Calcium as a versatile plant signal transducer under soil water stress

Shao, Hongbo; Chu, Li-Ye; Shao, Mingan

doi:10.1002/bies.20770

Cited by 78 publications

(37 citation statements)

References 109 publications

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“…To date, two major classes of plant calcium sensors in signal transduction have been identified: calcium-binding proteins (calmodulins) and Ca 2? -dependent protein kinases (or CPKs) (Hong-Bo et al 2008;Dubrovina et al 2013). However, the participation of one of specific Ca 2?…”

Section: Induction Mechanism Under Drought Stressmentioning

confidence: 99%

Evaluating the involvement and interaction of abscisic acid and miRNA156 in the induction of anthocyanin biosynthesis in drought-stressed plants

González‐Villagra

Kurepin

2017

Planta

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Main conclusion ABA is involved in anthocyanin synthesis through the regulation of microRNA156, augmenting the level of expression of anthocyanin synthesisrelated genes and, therefore, increasing anthocyanin level.Drought stress is the main cause of agricultural crop loss in the world. However, plants have developed mechanisms that allow them to tolerate drought stress conditions. At cellular level, drought stress induces changes in metabolite accumulation, including increases in anthocyanin levels due to upregulation of the anthocyanin biosynthetic pathway. Recent studies suggest that the higher anthocyanin content observed under drought stress conditions could be a consequence of a rise in the abscisic acid (ABA) concentration. This plant hormone crosses the plasma membrane by specific transporters, and it is recognized at the cytosolic level by receptors known as pyrabactin resistance (PYR)/regulatory component of ABA receptors (PYR/RCARs) that regulate downstream components. In this review, we discuss the hypothesis regarding the involvement of ABA in the regulation of microRNA156 (miRNA156), which is upregulated as part of dehydration stress responsiveness in different species. The miRNA156 upregulation produces a greater level of anthocyanin gene expression, forming the multienzyme complex that will synthesize an increased level of anthocyanins at the cytosolic face of the rough endoplasmic reticulum (RER). After synthesis, anthocyanins are transported from the RER to the vacuole by two possible models of transport: (1) membrane vesicle-mediated transport, or (2) membrane transporter-mediated transport. Thus, the aim was to analyze the recent findings on synthesis, transport and the possible mechanism by which ABA could increase anthocyanin synthesis under drought stress conditions potentially throughout microRNA156 (miRNA156).

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Section: Induction Mechanism Under Drought Stressmentioning

confidence: 99%

Evaluating the involvement and interaction of abscisic acid and miRNA156 in the induction of anthocyanin biosynthesis in drought-stressed plants

González‐Villagra

Kurepin

2017

Planta

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“…A manutenção do status hídrico das plantas, por meio do fechamento estomático, ocorre em resposta à sinalização desencadeada pelo ácido abscísico (Hong-Bo et al, 2008). Assim, como mensageiro secundário, o cálcio presente em maiores concentrações nas folhas pode aumentar a eficiência da ação do ácido abscísico sobre o controle estomático das perdas de água.…”

Section: Resultsunclassified

Fisiologia e produção da soja tratada com cinetina e cálcio sob deficit hídrico e sombreamento

Fioreze

Rodrigues²,

Carneiro

et al. 2013

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito da cinetina e do cálcio sobre as características fisiológicas e produtivas de plantas de soja submetidas a estresses por deficit hídrico e sombreamento na fase de florescimento. Utilizou-se o delineamento de blocos ao acaso, em arranjo de parcelas subdivididas com quatro repetições. Plantas de soja cultivadas em vasos de 38 dm 3 foram submetidas à aplicação de cálcio e cinetina, de forma isolada e combinada, no início do florescimento e, em seguida, submetidas a estresse por deficit hídrico e por sombreamento por 12 dias. Após o período de estresse, as plantas foram conduzidas até a maturação com suprimento adequado de água e radiação. A aplicação de cálcio e cinetina promoveu a manutenção do conteúdo relativo de água nas plantas, após quatro dias de deficit hídrico. O extravasamento de eletrólitos celulares, medido ao final do período de estresse, foi menor em plantas tratadas com cálcio e cinetina. A assimilação de CO 2 foi reduzida pela imposição do estresse, principalmente do deficit hídrico, e a produção de grãos nos dois ambientes foi reduzida na mesma intensidade. Termos de indexação:Glycine max, ácido abscísico, assimilação de CO 2 , florescimento, hormônios vegetais. Physiology and yield of soybean treated with kinetin and calcium under drought and shade conditionsAbstract -The objective of this work was to evaluate the effects of kinetin and calcium applications on the physiologic and productive traits of soybean plants, subjected to drought and shade conditions, at flowering. A randomized complete block design was used, in a split-plot arrangement, with four replicates. Soybean plants cultivated in 38 dm 3 pots were sprayed with calcium and kinetin, alone or mixed, and subjected to drought and shade during 12 days. After stress period, plants were cultivated under appropriate water and light availability. Calcium and kinetin application resulted in maintenance of the relative water content after four days of drought beginning. Membrane damage, measured at the end of stress period, was lower in plants sprayed with calcium and kinetin. CO 2 assimilation diminished by stress condition, mainly under drought, and grain yield decreased at the same intensity in both environments.

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“…This element also plays an essential role in regulating the properties of cytoplasmic membranes which are the first to respond to stresses: membrane disorders induced by drought in Vicia faba L. were ameliorated by supplemental Ca 2+ [11]. Due to such effects, calcium is widely applied in fruit production with the aim to improve fruit quality [9][10][11]. This aspect of its action was decisive for including calcium chloride in our investigations on the response of bedding plants to water stress.…”

Section: Digital Signaturementioning

confidence: 99%

“…It is required for various structural roles in the cell wall and membranes and acts as an intracellular messenger coordinating responses to numerous environmental signals [9]. A complex description of the Ca-controlled cascades of events occurring in plant cells under water stress can be found in a review by Hong-Bo et al [10]. This element also plays an essential role in regulating the properties of cytoplasmic membranes which are the first to respond to stresses: membrane disorders induced by drought in Vicia faba L. were ameliorated by supplemental Ca 2+ [11].…”

Section: Digital Signaturementioning

confidence: 99%

Effects of CaCl2 solutions to alleviate drought stress effects in potted ornamentals Salvia splendens and Ageratum houstonianum

2016

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Bedding plants are often subjected to soil water deficit -either after planting and/ or during the market chain. Methods to alleviate the negative water stress effects are sought for to preserve ornamental values of plants. The aim of this study was to evaluate the response of two bedding plants, Ageratum houstonianum Mill. and Salvia splendens Sellow ex Scult., to water stress and treatments with calcium chloride aimed to alleviate drought effects. Plants were subjected either to 45 days of periodical stress (five cycles when watering was off for 5 consecutive days, followed by four cycles on for 5 consecutive days) or 10 days of radical drought (complete water withdrawal). On the first day, before the onset of drought, plants were watered with 0.5% Ca or 1% Ca w/v as a solution of calcium chloride (5 g or 10 g Ca per 1 dm 3 of the growing substrate). The similarly Ca-treated but routinely watered plants provided controls to evaluate the water shortage effects. Plant height, inflorescence length/number, leaf number, leaf area (in Salvia splendens only), aboveground plant part weight, and root weight (in Salvia splendens only) as well as leaf relative water content (RWC) were measured at the beginning and at the end of the experiments. Water withdrawal during 10 days of growth (radical drought) reduced by half RWC in leaves of withering Salvia splendens and Ageratum hous tonianum plants. Its effects on the growth parameters were less pronounced and mitigated by Ca applications. Also in the periodically stressed plants of both species, RWC and most growth parameters were reduced by water shortage but Ca applications alleviated the negative stress effects.

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Calcium as a versatile plant signal transducer under soil water stress

Cited by 78 publications

References 109 publications

Evaluating the involvement and interaction of abscisic acid and miRNA156 in the induction of anthocyanin biosynthesis in drought-stressed plants

Evaluating the involvement and interaction of abscisic acid and miRNA156 in the induction of anthocyanin biosynthesis in drought-stressed plants

Fisiologia e produção da soja tratada com cinetina e cálcio sob deficit hídrico e sombreamento

Effects of CaCl2 solutions to alleviate drought stress effects in potted ornamentals Salvia splendens and Ageratum houstonianum

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