10.3389/fpls.2018.00621.s001
Le Gao
Le
Gao
Yong Sun
Yong
Sun
Min Wu
Min
Wu
Dan Wang
Dan
Wang
Jiashao Wei
Jiashao
Wei
Bingsun Wu
Bingsun
Wu
Guihua Wang
Guihua
Wang
Wenguan Wu
Wenguan
Wu
Xiang Jin
Xiang
Jin
Xuchu Wang
Xuchu
Wang
Peng He
Peng
He
Presentation_1_Physiological and Proteomic Analyses of Molybdenum- and Ethylene-Responsive Mechanisms in Rubber Latex.PDF
Frontiers
2018
comparative proteomics
ethylene
Hevea brasiliensis
molybdenum stimulation
natural rubber biosynthesis
rubber latex
2018-05-15 05:02:14
Presentation
https://frontiersin.figshare.com/articles/presentation/Presentation_1_Physiological_and_Proteomic_Analyses_of_Molybdenum-_and_Ethylene-Responsive_Mechanisms_in_Rubber_Latex_PDF/6268856
<p>Molybdenum (Mo) is an essential micronutrient in many plants. In the rubber tree Hevea brasiliensis, Mo application can reduce the shrinkage of the tapping line, decrease tapping panel dryness, and finally increase rubber latex yield. After combined Mo with ethylene (Eth), these effects become more obvious. However, the molecular mechanism remains unclear. Here, we compared the changed patterns of physiological parameters and protein accumulation in rubber latex after treated with Mo and/or Eth. Our results demonstrated that both Eth and Mo can improve the contents of thiol, sucrose, and dry yield in rubber latex. However, lutoid bursting is significantly inhibited by Mo. Comparative proteomics identified 169 differentially expressed proteins, including 114 unique proteins, which are mainly involved in posttranslational modification, carbohydrate metabolism, and energy production. The abundances of several proteins involved in rubber particle aggregation are decreased upon Mo stimulation, while many enzymes related to natural rubber biosynthesis are increased. Comparison of the accumulation patterns of 25 proteins revealed that a large portion of proteins have different changed patterns with their gene expression levels. Activity assays of six enzymes revealed that Mo stimulation can increase latex yield by improving the activity of some Mo-responsive enzymes. These results not only deepen our understanding of the rubber latex proteome but also provide new insights into the molecular mechanism of Mo-stimulated rubber latex yield.</p>