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Perspectives on deciphering mechanisms underlying plant heat stress response and thermotolerance.

Bokszczanin KL, Solanaceae Pollen Thermotolerance Initial Training Network (SPOT-ITN) ConsortiumFragkostefanakis S - Front Plant Sci (2013)

Bottom Line: Global warming is a major threat for agriculture and food safety and in many cases the negative effects are already apparent.The sexual reproduction phase is considered as the most sensitive to heat and specifically pollen exhibits the highest sensitivity and frequently an elevation of the temperature just a few degrees above the optimum during pollen development can have detrimental effects for crop production.The review aims at describing the current knowledge of thermotolerance mechanisms and the technical advances which will foster new insights into this process.

View Article: PubMed Central - PubMed

Affiliation: GenXPro GmbH, Frankfurt am Main Germany.

ABSTRACT
Global warming is a major threat for agriculture and food safety and in many cases the negative effects are already apparent. The current challenge of basic and applied plant science is to decipher the molecular mechanisms of heat stress response (HSR) and thermotolerance in detail and use this information to identify genotypes that will withstand unfavorable environmental conditions. Nowadays X-omics approaches complement the findings of previous targeted studies and highlight the complexity of HSR mechanisms giving information for so far unrecognized genes, proteins and metabolites as potential key players of thermotolerance. Even more, roles of epigenetic mechanisms and the involvement of small RNAs in thermotolerance are currently emerging and thus open new directions of yet unexplored areas of plant HSR. In parallel it is emerging that although the whole plant is vulnerable to heat, specific organs are particularly sensitive to elevated temperatures. This has redirected research from the vegetative to generative tissues. The sexual reproduction phase is considered as the most sensitive to heat and specifically pollen exhibits the highest sensitivity and frequently an elevation of the temperature just a few degrees above the optimum during pollen development can have detrimental effects for crop production. Compared to our knowledge on HSR of vegetative tissues, the information on pollen is still scarce. Nowadays, several techniques for high-throughput X-omics approaches provide major tools to explore the principles of pollen HSR and thermotolerance mechanisms in specific genotypes. The collection of such information will provide an excellent support for improvement of breeding programs to facilitate the development of tolerant cultivars. The review aims at describing the current knowledge of thermotolerance mechanisms and the technical advances which will foster new insights into this process.

No MeSH data available.


Related in: MedlinePlus

Plant thermosensors and main signal transduction pathways implicated in heat stress response and thermotolerance.
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Figure 1: Plant thermosensors and main signal transduction pathways implicated in heat stress response and thermotolerance.

Mentions: The HSR of plants is highly conserved and at least four putative sensors have been proposed to trigger the HSR (Mittler et al., 2012). They include a plasma membrane (PM) channel that initiates an inward calcium flux (Saidi et al., 2009), a histone sensor in the nucleus (Kumar and Wigge, 2010), and two unfolded protein sensors in the endoplasmic reticulum (Che et al., 2010; Deng et al., 2011) and the cytosol (Sugio et al., 2009; Figure 1). Each of these putative sensors is thought to activate a similar set of HSR genes leading to enhanced thermotolerance, but the relationship between the different pathways and their hierarchical order remains unclear (Mittler et al., 2011).


Perspectives on deciphering mechanisms underlying plant heat stress response and thermotolerance.

Bokszczanin KL, Solanaceae Pollen Thermotolerance Initial Training Network (SPOT-ITN) ConsortiumFragkostefanakis S - Front Plant Sci (2013)

Plant thermosensors and main signal transduction pathways implicated in heat stress response and thermotolerance.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3750488&req=5

Figure 1: Plant thermosensors and main signal transduction pathways implicated in heat stress response and thermotolerance.
Mentions: The HSR of plants is highly conserved and at least four putative sensors have been proposed to trigger the HSR (Mittler et al., 2012). They include a plasma membrane (PM) channel that initiates an inward calcium flux (Saidi et al., 2009), a histone sensor in the nucleus (Kumar and Wigge, 2010), and two unfolded protein sensors in the endoplasmic reticulum (Che et al., 2010; Deng et al., 2011) and the cytosol (Sugio et al., 2009; Figure 1). Each of these putative sensors is thought to activate a similar set of HSR genes leading to enhanced thermotolerance, but the relationship between the different pathways and their hierarchical order remains unclear (Mittler et al., 2011).

Bottom Line: Global warming is a major threat for agriculture and food safety and in many cases the negative effects are already apparent.The sexual reproduction phase is considered as the most sensitive to heat and specifically pollen exhibits the highest sensitivity and frequently an elevation of the temperature just a few degrees above the optimum during pollen development can have detrimental effects for crop production.The review aims at describing the current knowledge of thermotolerance mechanisms and the technical advances which will foster new insights into this process.

View Article: PubMed Central - PubMed

Affiliation: GenXPro GmbH, Frankfurt am Main Germany.

ABSTRACT
Global warming is a major threat for agriculture and food safety and in many cases the negative effects are already apparent. The current challenge of basic and applied plant science is to decipher the molecular mechanisms of heat stress response (HSR) and thermotolerance in detail and use this information to identify genotypes that will withstand unfavorable environmental conditions. Nowadays X-omics approaches complement the findings of previous targeted studies and highlight the complexity of HSR mechanisms giving information for so far unrecognized genes, proteins and metabolites as potential key players of thermotolerance. Even more, roles of epigenetic mechanisms and the involvement of small RNAs in thermotolerance are currently emerging and thus open new directions of yet unexplored areas of plant HSR. In parallel it is emerging that although the whole plant is vulnerable to heat, specific organs are particularly sensitive to elevated temperatures. This has redirected research from the vegetative to generative tissues. The sexual reproduction phase is considered as the most sensitive to heat and specifically pollen exhibits the highest sensitivity and frequently an elevation of the temperature just a few degrees above the optimum during pollen development can have detrimental effects for crop production. Compared to our knowledge on HSR of vegetative tissues, the information on pollen is still scarce. Nowadays, several techniques for high-throughput X-omics approaches provide major tools to explore the principles of pollen HSR and thermotolerance mechanisms in specific genotypes. The collection of such information will provide an excellent support for improvement of breeding programs to facilitate the development of tolerant cultivars. The review aims at describing the current knowledge of thermotolerance mechanisms and the technical advances which will foster new insights into this process.

No MeSH data available.


Related in: MedlinePlus