Expression of NAC transcription factor is altered under intermittent drought stress and re-watered conditions in Hevea brasiliensis

Lisha P. Luke; M. B. Mohamed Sathik; Molly Thomas; Linu Kuruvilla; K.V. Sumesh

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자료유형: 학술저널

저자정보: Lisha P. Luke (Rubber Research Institute of India) M. B. Mohamed Sathik (Rubber Research Institute of India) Molly Thomas (Rubber Research Institute of India) Linu Kuruvilla (Rubber Research Institute of India) K.V. Sumesh (Rubber Research Institute of India)

저널정보: 한국식물생명공학회 Journal of Plant Biotechnology Journal of Plant Biotechnology 제44권 제2호

발행연도: 2017.6

수록면: 142 - 148 (7page)

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Drought stress is one of the important factors that restrict the expansion of Hevea brasiliensis cultivation to nontraditional regions experiencing extreme weather conditions. Plants respond to drought stress by triggering expression of several drought responsive genes including transcription factors which in turn trigger expression of various downstream signalling pathways and adaptive networks. Expression of such drought responsive genes may revert back to their original level upon re-watering. However, no reports are available on such phenomenon in Hevea and hence, this study was initiated. For this purpose, NAC transcription factor (NAC tf) was chosen as candidate gene. Its expression levels were monitored under intermittent drought as well as irrigated conditions in two clones (RRII 105 and RRIM 600) of H. brasiliensis with contrasting tolerance level. Copy number of NAC tf was found similar in both the clones. Expression of NAC tf was found highly up-regulated in RRIM 600 (a relatively drought tolerant clone) than in RRII 105 (a relatively drought susceptible clone) throughout the drought incidences which upon re-watering, reached back to its original levels in both the clones. The study indicated the existence of an association between expression of NAC tf and drought tolerance trait exhibited by the tolerant clone RRIM 600. The study also proves the influence of drought and re-watering on the leaf photosynthesis and expression of NAC tf in H. brasiliensis.

#Hevea brasiliensis #intermittent drought stress and watering #NAC transcription factor #quantitative expression analysis

참고문헌 (38)

참고문헌 신청

Abe H / 1997 / Role of Arabidopsis MYC and MYB homologs in drought- and abscisic acid-regulated gene expression / Plant Cell 9:1859~1868

Chandrasekhar TR / 1990 / Seasonal changes in physiological characteristics and yield in newly opened trees of Hevea brasiliensis in North Konkan / Indian J Nat Rub Res 3:88~97

Chandrashekar TR / 1996 / Growth reaction of Hevea brasiliensis to heat and drought under dry sub humid climatic conditions / Indian J Nat Rubber Res 9:1~5

Devakumar AS / 1998 / Effects of atmospheric and soil drought on growth and development of Hevea brasiliensis / J Rub Res 1:190~198

Devakumar AS / 2002 / Photosynthesis in mature trees of Hevea brasiliensis experiencing drought and cold stresses concomitant with high light in the field / Indian J Nat Rub Res 15:1~13

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