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Regulation of MIR genes in response to abiotic stress in Hevea brasiliensis.

Gébelin V, Leclercq J, Hu S, Tang C, Montoro P - Int J Mol Sci (2013)

Bottom Line: Many microRNAs regulated during abiotic stress modulate growth and development.Regulation of MIR genes differs depending on the tissue and abiotic stress applied.A negative co-regulation between HbMIR398b with its chloroplastic HbCuZnSOD target messenger is observed in response to salinity.

View Article: PubMed Central - PubMed

Affiliation: Centre de Coopération Internationale en Recherche Agronomique Pour le Développement, Unité Mixte de Recherche Amélioration Génétique et Adaptation des Plantes Méditerranéennes et Tropicales, Avenue Agropolis, Montpellier F-34398, France. pascal.montoro@cirad.fr.

ABSTRACT
Increasing demand for natural rubber (NR) calls for an increase in latex yield and also an extension of rubber plantations in marginal zones. Both harvesting and abiotic stresses lead to tapping panel dryness through the production of reactive oxygen species. Many microRNAs regulated during abiotic stress modulate growth and development. The objective of this paper was to study the regulation of microRNAs in response to different types of abiotic stress and hormone treatments in Hevea. Regulation of MIR genes differs depending on the tissue and abiotic stress applied. A negative co-regulation between HbMIR398b with its chloroplastic HbCuZnSOD target messenger is observed in response to salinity. The involvement of MIR gene regulation during latex harvesting and tapping panel dryness (TPD) occurrence is further discussed.

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Stem-loop structure of three precursors of MIR398 in Hevea brasiliensis. The mature microRNA sequence is shown in dark.
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f2-ijms-14-19587: Stem-loop structure of three precursors of MIR398 in Hevea brasiliensis. The mature microRNA sequence is shown in dark.

Mentions: Three miR/target pairs have been experimentally validated in the rubber tree (miR156/Squamosa promoter binding protein, miR160/ARF and miR398/chloroplastic CuZnSOD) [26]. We chose to monitor expression of the MIR398/chloroplastic CuZnSOD pair. HbmiR398 is generated by three HbMIR398 genes (3 genes, a, b and c; Figure 2).


Regulation of MIR genes in response to abiotic stress in Hevea brasiliensis.

Gébelin V, Leclercq J, Hu S, Tang C, Montoro P - Int J Mol Sci (2013)

Stem-loop structure of three precursors of MIR398 in Hevea brasiliensis. The mature microRNA sequence is shown in dark.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3821574&req=5

f2-ijms-14-19587: Stem-loop structure of three precursors of MIR398 in Hevea brasiliensis. The mature microRNA sequence is shown in dark.
Mentions: Three miR/target pairs have been experimentally validated in the rubber tree (miR156/Squamosa promoter binding protein, miR160/ARF and miR398/chloroplastic CuZnSOD) [26]. We chose to monitor expression of the MIR398/chloroplastic CuZnSOD pair. HbmiR398 is generated by three HbMIR398 genes (3 genes, a, b and c; Figure 2).

Bottom Line: Many microRNAs regulated during abiotic stress modulate growth and development.Regulation of MIR genes differs depending on the tissue and abiotic stress applied.A negative co-regulation between HbMIR398b with its chloroplastic HbCuZnSOD target messenger is observed in response to salinity.

View Article: PubMed Central - PubMed

Affiliation: Centre de Coopération Internationale en Recherche Agronomique Pour le Développement, Unité Mixte de Recherche Amélioration Génétique et Adaptation des Plantes Méditerranéennes et Tropicales, Avenue Agropolis, Montpellier F-34398, France. pascal.montoro@cirad.fr.

ABSTRACT
Increasing demand for natural rubber (NR) calls for an increase in latex yield and also an extension of rubber plantations in marginal zones. Both harvesting and abiotic stresses lead to tapping panel dryness through the production of reactive oxygen species. Many microRNAs regulated during abiotic stress modulate growth and development. The objective of this paper was to study the regulation of microRNAs in response to different types of abiotic stress and hormone treatments in Hevea. Regulation of MIR genes differs depending on the tissue and abiotic stress applied. A negative co-regulation between HbMIR398b with its chloroplastic HbCuZnSOD target messenger is observed in response to salinity. The involvement of MIR gene regulation during latex harvesting and tapping panel dryness (TPD) occurrence is further discussed.

Show MeSH
Related in: MedlinePlus