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Biochemical and biophysical research communications v.494 no.3/4, 2017년, pp.499 - 503   SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

Loss of Ribosomal Protein L24A (RPL24A) suppresses proline accumulation of Arabidopsis thaliana ring zinc finger 1 (atrzf1) mutant in response to osmotic stress

Park, Seung-Hyeon (Department of Plant Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea ); Chung, Moon-Soo (Korea Atomic Energy Research Institute, Jeollabuk-do 56212, Republic of Korea ); Lee, Sungbeom (Korea Atomic Energy Research Institute, Jeollabuk-do 56212, Republic of Korea ); Lee, Kyeong-Hwan (Department of Rural and Biosystems Engineering, Agricultural Robotics and Automation Research Center, Chonnam National University, Gwangju 61186, Republic of Korea ); Kim, Cheol Soo (Department of Plant Biotechnology, Chonnam National University, Gwangju 61186, Republic of Korea );
  • 초록  

    Abstract Proline (Pro) metabolism in plants is involved in various cellular processes mediated during abiotic stress. However, the Pro-regulatory mechanisms are unclear. We used a suppressor mutation technique to isolate novel genes involved in the regulation of Pro metabolism in Arabidopsis . Using atrzf1 as a parental plant for T-DNA tagging mutagenesis, we identified a suppressor mutant, termed proline content alterative 21 ( pca21 ), that displayed reduced Pro contents compared with the atrzf1 under osmotic stress conditions. Genomic Thermal Asymmetric Interlaced (TAIL)-PCR revealed pca21 harbored an inserted T-DNA in the region of At2g36620 that encodes Ribosomal Protein L24A. In general, the pca21 mutant partially suppressed the insensitivity of atrzf1 to osmotic stress and abscisic acid during seed germination and early seedling stage. Additionally, the pca21 mutant had increased MDA content and lower expression of several Pro biosynthesis-related genes than the atrzf1 mutant during drought condition. These results suggest that pca21 acts as partial suppressor of atrzf1 in the osmotic stress response through the Pro-mediated pathway. Highlights PCA21 regulates the proline production of atrzf1 in response to drought. PCA21 suppresses partially the AtRZF1 in response to dehydration and abscisic acid. RPL24A positively involved in Pro accumulation during drought stress.


  • 주제어

    atrzf1 .   Osmotic stress .   Proline .   proline content alterative 21 .   RPL24A.  

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