Cross-talk between gibberellins and salicylic acid in early stress responses in <span style="font-style

Abstract

Salicylic acid (SA) is a plant hormone mainly associated with the induction of defense mechanism in plants, although in the last years there is increasing evidence on the role of SA in plant responses to abiotic stress. We recently reported that an increase in endogenous SA levels are able to counteract the inhibitory effects of several abiotic stress conditions during germination and seedling establishment of Arabidopsis thaliana and that this effect is modulated by gibberellins (GAs) probably through a member of the GASA (Giberellic Acid Stimulated in Arabidopsis) gene family, clearly showing the existence of a cross talk between these two plant hormones in Arabidopsis.

PUB16 gene expression under abiotic stress and their putative role as an ARM repeat protein in &lt;i&gt;Arabidopsis thaliana&lt;/i&gt; self-pollination pathway

“…According to our gene expression studies, it appears that exogenous addition of GA cause PUB16 gene expression, but this not happen in normal condition growth or in ABA presence. Also, these results are consistent with previous reports that postulate that, plants ARM repeat super-family proteins expression is subjected to both salt [50] or hormonal stresses [76]. Furthermore, these outcomes suggest that A. thaliana could use some GA-signaling pathway which favors selfpollination, fruit set and great seed production under hormonal stress.…”

Salicylic acid treatment of pea seeds induces its de novo synthesis

“…It may induce heat production due to the enhanced activity of the cyanide-resistant or alternative respiration chains (Raskin et al, 1987). SA is part of an extremely complex signal transduction network linked with pathways related to other stress hormones, such as jasmonic acid (Navarro et al, 2008), gibberellic acids (Alonso-Ramírez et al, 2009) and abscisic acid (Mosher et al, 2010), and several questions about the mode of action of SA are still unanswered. It is assumed that there may be at least two translocated signals: a lipid-derived molecule and MeSA (Park et al, 2007).…”

Quantitative Trait Loci Associated to Drought Adaptation in Pea (Pisum sativum L.)

“…modulation (Alonso-Ramírez et al 2009). Hormones such as ethylene, salicylate, jasmonate and abscisic acid (ABA) act synergistically or antagonistically to regulate plant responses to pathogens and abiotic stress factors (Rao et al,2000(Rao et al, , 2002Borsani et al 2001;Turner et al 2002;Xiong et al 2002).…”