2016
DOI: 10.1186/s12864-016-2587-4
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Molecular mechanism of ethylene stimulation of latex yield in rubber tree (Hevea brasiliensis) revealed by de novo sequencing and transcriptome analysis

Abstract: BackgroundRubber tree (Hevea brasiliensis) is an important industrial crop cultivated in tropical areas for natural rubber production. Treatment of the bark of rubber trees with ehephon (an ethylene releaser) has been a routine measure to increase latex yield, but the molecular mechanism behind the stimulation of rubber production by ethylene still remains a puzzle. Deciphering the enigma is of great importance for improvement of rubber tree for high yield.ResultsDe novo sequencing and assembly of the bark tra… Show more

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Cited by 37 publications
(24 citation statements)
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References 73 publications
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“…In this study, we achieved more than 7 Gb of clean reads from each of the four sets of sequencing samples derived from the cambia-containing materials of rubber tree clone CATAS7-33-97. The sequencing depth of each sample was higher than the reported 0.2–6 Gb sequencing depth of bark in rubber tree3031323334 and equivalent to sequencing depth (7–8 Gb) reported by Mantello et al 35. This high sequencing depth is beneficial for global transcriptome assembly.…”
Section: Discussionmentioning
confidence: 69%
“…In this study, we achieved more than 7 Gb of clean reads from each of the four sets of sequencing samples derived from the cambia-containing materials of rubber tree clone CATAS7-33-97. The sequencing depth of each sample was higher than the reported 0.2–6 Gb sequencing depth of bark in rubber tree3031323334 and equivalent to sequencing depth (7–8 Gb) reported by Mantello et al 35. This high sequencing depth is beneficial for global transcriptome assembly.…”
Section: Discussionmentioning
confidence: 69%
“…In the present study we found that the glycolysis pathway was significantly enriched in M5 samples when compared with C samples (Fig 7) and up-regulation of numerous enzyme genes led to an elevated rate of flux and replenished the precursors consumed in IPP biosynthesis. Research on the rubber tree ( Hevea brasiliensis ) has suggested that such rapid acceleration of the glycolysis pathway in supplying precursors for the production of IPP and natural rubber, rather than rubber biosynthesis per se, is responsible for ethylene (ET) stimulation of latex yields [44]. Here, we noted that the high expression of enzyme genes in both the glycolysis pathway and the IPP biosynthesis pathway contributed to greatly increased gentiopicroside concentrations in response to MeJA.…”
Section: Discussionmentioning
confidence: 73%
“…Moreover, under stress conditions, ABA interacts with the SA/JA pathways [48]. Although some plant hormones, e.g., ABA, ET, and SA, induce the production of bioactive compounds [44,49], it is unclear how JA interacts and coordinates with other hormones with regard to this stimulation. Our results showed that treatment with MeJA triggered the enrichment of signal transduction pathways for GA, ET, SA, and ABA.…”
Section: Discussionmentioning
confidence: 99%
“…The rubber tree ( Hevea brasiliensis ) the only resource for commercial natural rubber production and has been cultivated on over 10 million hectares worldwide for industrial production (IRSG, ). Most plantation areas are located in Southeast Asia, including Thailand, Indonesia, Malaysia and Vietnam (Li & Fox, ; Liu et al, ). Since the early 1950s, rubber trees have been successfully cultivated in regions of China with cooler temperatures and distinctive dry seasons (Pu et al, ).…”
Section: Introductionmentioning
confidence: 99%
“…Many leaf diseases, mainly anthracnose, powdery mildew, South American leaf blight, and leaf spot, have been reported on rubber trees. The recorded pathogens of leaf spot diseases on rubber trees mainly include Phyllosticta heveae , Cephaleuros vitescens , Periconia heveae , Corynespora cassiicola , Bipolaris heveae and Bipolaris setariae (Jayatissa, Liyanage, & Wijesurendra, ; Liu, Shi, et al, ; Pitaloka, Petcharat, Arikit, & Sunpapao, ; Pu et al, ; Wastie, ). Leaf spot disease on a rubber tree was found in 2017 in Hainan, China.…”
Section: Introductionmentioning
confidence: 99%