Calcium Signaling: Linking Environmental Signals to Cellular Functions

Pandey, Sona; Tiwari, Swati; Upadhyaya, Kailash C.; Sopory, Sudhir K.

doi:10.1080/07352680091139240

Cited by 44 publications

(29 citation statements)

References 197 publications

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“…Substantial progress has been made in the characterization of the ABA signal transduction cascades (Bonetta and McCourt, 1998;Leung and Giraudat, 1998;Kang et al, 2002;González-García et al, 2003). Genes that respond to exogenous ABA applications have been identified (Skriver and Mundy, 1990), and secondary messengers, such as Ca 21 , cyclic ADP-ribose, and inositol triphosphates, have been implicated in ABA-mediated responses (Wu et al, 1997;Pandey et al, 2000;Viswanathan and Zhu, 2002). ABA signaling appears to involve a complex network of both positively and negatively regulating components, including kinases, phosphatases, and transcriptional regulators (Finkelstein et al, 2002;Abe et al, 2003;González-García et al, 2003).…”

mentioning

confidence: 99%

A Lily ASR Protein Involves Abscisic Acid Signaling and Confers Drought and Salt Resistance in Arabidopsis

Yang

Chen²,

Jauh³

et al. 2005

Plant Physiology

145

106

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LLA23, an abscisic acid-, stress-, and ripening-induced protein, was previously isolated from lily (Lilium longiflorum) pollen. The expression of LLA23 is induced under the application of abscisic acid (ABA), NaCl, or dehydration. To provide evidence on the biological role of LLA23 proteins against drought, we used an overexpression approach in Arabidopsis (Arabidopsis thaliana). Constitutive overexpression of LLA23 under the cauliflower mosaic virus 35S promoter confers reduced sensitivity to ABA in Arabidopsis seeds and, consequently, a reduced degree of seed dormancy. Transgenic 35STLLA23 seeds are able to germinate under unfavorable conditions, such as inhibitory concentrations of mannitol and NaCl. At the molecular level, altered expression of ABA/stress-regulated genes was observed. Thus, our results provide strong in vivo evidence that LLA23 mediates stress-responsive ABA signaling. In vegetative tissues, it is intriguing that Arabidopsis 35STLLA23 stomata remain opened upon drought, while transgenic plants have a decreased rate of water loss and exhibit enhanced drought and salt resistance. A dual function of the lily abscisic acid-, stress-, and ripening-induced protein molecule is discussed.

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mentioning

confidence: 99%

A Lily ASR Protein Involves Abscisic Acid Signaling and Confers Drought and Salt Resistance in Arabidopsis

Yang

Chen²,

Jauh³

et al. 2005

Plant Physiology

145

106

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“…Each point represents an average value from at least 20 segments, with standard errors as indicated. Harmon et al 2000, Pandey et al 2000, Reddy 2001, Cheng et al 2002, Nayyar 2003, Malho et al 2006. However, there have been no reports of CDPK or protein phosphorylation by CDPK influencing growth in plants.…”

Section: Discussionmentioning

confidence: 99%

Calcium-dependent protein phosphorylation in hairy roots of Daucus carota

Kato

Okuyama

Kodama

et al. 2007

Plant Biotechnology

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“…Plants withstand various stress conditions by responses mediated via changes in cytoplasmic calcium concentrations that are perceived and transduced by calcium binding proteins. Usually, variations in Ca 2π levels are mediated by modifications in the phosphorylation/ dephosphorylation pattern of related proteins, some of which are catalysed by calcium-dependent protein kinases (reviewed in Pandey et al 2000). As CDPKs are considered to be stress-responsive enzymes, it was interesting to analyse if this kinase was a target of a JAinduced stress or was subjected to cross-regulation by components of JA dependent pathways.…”

Section: Cdpk In Ja-treated Plantsmentioning

confidence: 99%

Jasmonic acid affects plant morphology and calcium‐dependent protein kinase expression and activity in Solanum tuberosum

Ulloa

Raı́ces

MacIntosh

et al. 2002

Physiologia Plantarum

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The effect of jasmonic acid (JA) on plant growth and on calcium-dependent protein kinase (CDPK) activity and expression was studied in non-photoperiodic potato plants, Solanum tuberosum L. var. Spunta, grown in vitro. Stem cuttings were grown for 45 days (long treatment, LT) in MS medium with increasing concentrations of JA. For short treatments (ST) adult plants grown in MS were transferred for 1, 4 and 20 h to JA containing media. During the LT, low concentrations of JA promoted cell expansion and shoot elongation while higher concentrations caused growth inhibition. Under these conditions, treated plants showed root shortening and tuber formation was not induced. Morphological and histochemical studies using light microscopy and TEM analysis of leaves from treated plants revealed that JA also affected subcellular organelles of mesophyll cells. Peroxisomes increased in size and number, and an autophagic process was triggered in response to high concentrations of the hormone. CDPK activity, determined in crude extracts of treated plants (LT), was inhibited (up to 80%). Plant growth and CDPK inhibition were reverted upon transfer of the plants to hormone-free medium. Soluble CDPK activity decreased in response to JA short treatment. Concomitantly, a decline in the steady state levels of StCDPK2 mRNA, a potato CDPK isoform that is expressed in leaves, was observed. These data suggest that the phytohormone down-regulated the expression and activity of the kinase.

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Calcium Signaling: Linking Environmental Signals to Cellular Functions

Cited by 44 publications

References 197 publications

A Lily ASR Protein Involves Abscisic Acid Signaling and Confers Drought and Salt Resistance in Arabidopsis

A Lily ASR Protein Involves Abscisic Acid Signaling and Confers Drought and Salt Resistance in Arabidopsis

Calcium-dependent protein phosphorylation in hairy roots of Daucus carota

Jasmonic acid affects plant morphology and calcium‐dependent protein kinase expression and activity in Solanum tuberosum

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