Article
Energy & Fuels
Sara Luneburger, Andre Lazarin Gallina, Letiere Cabreira Soares
Summary: This study developed a treatment method to reduce the acidity content and improve the quality of Hevea Brasiliensis biodiesel. By using esterification reaction and transesterification method, the acidity level was significantly reduced and the resulting biodiesel met the market requirements.
Article
Plant Sciences
Yoshimi Nakano, Nobutaka Mitsuda, Kohei Ide, Teppei Mori, Farida Rosana Mira, Syofi Rosmalawati, Norie Watanabe, Kaoru Suzuki
Summary: Ethephon treatment induces dynamic changes in gene expression in Para rubber tree seedlings, with upregulation of genes associated with carotenoids, flavonoids, and abscisic acid biosynthesis contributing to an increase in latex flow. Downregulation of genes associated with secondary cell wall formation may be due to reduced sugar supply. Understanding the molecular mechanisms of ethylene response in the Para rubber tree can lead to improved latex production practices.
Article
Agronomy
Dongling Qi, Zhixiang Wu, Chuan Yang, Guishui Xie, Zimin Li, Xiaobo Yang, Donghai Li
Summary: The research demonstrates that intercropping rubber trees with native tree species can reduce wind damage to rubber trees, improve their health, and increase productivity.
EUROPEAN JOURNAL OF AGRONOMY
(2021)
Article
Plant Sciences
Bingbing Guo, Longjun Dai, Hong Yang, Xizhu Zhao, Mingyang Liu, Lifeng Wang
Summary: This study identified HbBRI1 and HbBAK1 genes in rubber tree and found their crucial role in plant hormone signal transduction. The expression of HbBRI1 and HbBAK1 genes is significantly induced by different hormone stimuli. These findings provide a theoretical basis for further research on the functions of BR receptors in the rubber tree.
Article
Plant Sciences
Wen Ze Go, Kit Ling Chin, Paik San H'ng, Mui Yun Wong, Chuan Li Lee, Pui San Khoo
Summary: The study shows that T. asperellum is a potential biocontrol agent that can effectively control R. microporus infection on rubber trees.
Article
Plant Sciences
Wen Ze Go, Kit Ling Chin, Paik San H'ng, Mui Yun Wong, Chuah Abdullah Luqman, Arthy Surendran, Geok Hun Tan, Chuan Li Lee, Pui San Khoo, Wai Jern Kong
Summary: This study investigated the virulence of different Rigidoporus microporus isolates obtained from infected rubber trees in Malaysia, with isolate RL21 from Sarawak showing the highest level of pathogenicity. The in vitro tests revealed that RL21 prefers weakly acidic to neutral environments and grows optimally at 25-30 degrees C. The findings emphasize the importance of selecting the most virulent isolate for effective control measures against R. microporus.
Article
Mycology
C. Senwanna, A. Mapook, M. C. Samarakoon, A. Karunarathna, Y. Wang, A. M. C. Tang, S. Haituk, N. Suwannarach, K. D. Hyde, R. Cheewangkoon
Summary: This study focused on ascomycetes associated with Para rubber trees in Thailand, with most species previously recorded in the country. Some species were found to have jumped hosts, colonizing rubber trees from unrelated plants.
Article
Agricultural Engineering
Shichao Xin, Yuwei Hua, Dejun Li, Jinu Udayabhanu, Hong Yang, Rizhi Wu, Huasun Huang, Tiandai Huang
Summary: This study explores the role of EuFPS5 in the biosynthesis of FPP in Hevea brasiliensis, providing evidence that higher FPP levels increase rubber production but decrease rubber molecular weight. The findings lay a foundation for future genetic improvement of natural rubber production in Hevea brasiliensis.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Forestry
Mengcheng Duan, Liang Li, Gaigai Ding, Zeqing Ma
Summary: This study developed a new framework to understand the variation in root and symbiotic fungi of rubber trees. Results showed that root system architecture and productivity played a leading role in belowground resource acquisition, while mycorrhizal colonization was sensitive to elevation changes.
Article
Agricultural Engineering
Tiandai Huang, Shichao Xin, Yongjun Fang, Tao Chen, Jiao Chang, Nay Chi Ko Ko, Huasun Huang, Yuwei Hua
Summary: Anthocyanin production can be used as a visual selection marker for transformation of Hevea Brasiliensis, and can be activated by methyl jasmonate treatment. A novel transcription factor HbAN2 has been isolated and its regulatory roles in anthocyanin biosynthesis have been characterized in tobacco cells and Hevea embryos.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Agricultural Engineering
Xiangyu Long, Yongjun Fang, Yunxia Qin, Jianghua Yang, Xiaohu Xiao
Summary: The study revealed that there are 4122 highly expressed genes and 6485 low expression genes in the laticifer of the rubber tree, enriched in various metabolic pathways related to rubber biosynthesis. Additionally, the ubiquitin-proteasome system (UBS) in the laticifer is surprisingly active, serving as an important metabolic control mechanism in rubber biosynthesis. Latex specific transcription factors (TFs) were identified to be involved in seven plant hormone signal transductions, suggesting that jasmonate (JA) signaling plays a role in positive regulation of rubber biosynthesis.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Green & Sustainable Science & Technology
John Nyandansobi Simon, Narissara Nuthammachot, Teerawet Titseesang, Kingsley Ezechukwu Okpara, Kuaanan Techato
Summary: The province of Songkhla in Thailand is recognized as a convenient hub for the development of the rubber industry, with a spatial assessment revealing significant aboveground biomass potentials from rubber tree plantations. Through remote sensing techniques and ecosystem modeling, estimates of net primary productivity and above ground biomass potentials were derived, highlighting theoretical potential and energy usable biomass potentials. This region shows promise as a carbon sink and sustainable supplier of biomass for both energy and non-energy purposes, with opportunities for comprehensive biomass utilization and policy guidance towards sustainable development in the rubber sector.
Article
Agricultural Engineering
Maycon Jhony Silva, Pedro Ivo Cunha Claro, Joyci Camila da Silva, Erivaldo Jose Scaloppi Junior, Paulo de Souza Goncalves, Maria Alice Martins, Luiz Henrique Capparelli Mattoso
Summary: This study evaluated the physicochemical, thermal, and structural properties of latex and dry rubber from four rubber tree clones, and assessed the relationship to the final properties of natural rubber (NR). Variations in chemical composition were observed among clones and tapping periods, while thermal and structural evaluations showed uniformity across all clones. Comparison among clones, extraction periods, and within the same clone allowed for analysis of performance and uniformity of the rubber produced.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Multidisciplinary Sciences
Bingbing Guo, Hong Yang, Longjun Dai, Xizhu Zhao, Li-Feng Wang
Summary: This study characterized the HbBES1 gene family in rubber trees through bioinformatics analysis. Nine BES1 members were identified, showing similar gene structures and regulatory elements related to hormone and stress signal pathways. The expression profiles of HbBES1 genes varied under different hormone treatments, with HbBES1-3 and HbBES1-9 being highly induced by ethylene. These findings provide insights into the molecular mechanisms of the BES1 gene family and its regulation of stress tolerance in rubber trees.
Article
Agronomy
Shaikh Mohd Hizami Shaikh Abd Hadi, Latiffah Zakaria, Siti Nordahliawate Mohamed Sidique, Murnita Mohmad Mahyudin, Zulkarami Berahim, Muhamad Arif Idris, Nik Mohd Izham Mohamed Nor
Summary: The supplementation of soluble silicon has been proven to be effective in controlling white root disease in rubber rootstock seedlings by improving their physiological performance and reducing the severity of the disease. It enhances chlorophyll content, photosynthesis rate, stomatal conductance, and transpiration rate, while reducing disease severity and increasing the accumulation of silicon and total phenolic compounds in the roots of the seedlings.