Article
Agronomy
Ke Yang, Hongmei Liu, Weihua Jiang, Yinxia Hu, Zhiyang Zhou, Xin An, Si Miao, Yushi Qin, Bo Du, Lili Zhu, Guangcun He, Rongzhi Chen
Summary: This study collected 560 germplasm accessions from the International Rice Research Institute (IRRI) and tested their resistance to the current brown planthopper (BPH) population in China. A total of 105 highly resistant materials were identified. Using specific functional molecular markers, the study also found 23 resistant germplasms that did not contain any of the eight cloned BPH resistance genes, indicating the presence of new resistance genes. One new BPH resistance gene, Bph44(t), was identified in a rice accession and preliminarily mapped to a specific region on chromosome 4. The findings provide valuable resources for identifying new resistance genes and breeding programs against BPH.
MOLECULAR BREEDING
(2023)
Article
Agricultural Engineering
Zheng-Yu Tang, Lei Li, Wei Tang, Jia-Wei Shen, Qi-Zhen Yang, Cuiluan Ma, Yu-Cai He
Summary: Researchers have found that deep eutectic solvents (DESs) have the potential to improve lignocellulose pretreatment efficiency. They developed an effective pretreatment approach using the DES [AA][CATB], made with acetic acid (AA) and cetyltrimethylammonium bromide (CTAB), which significantly improved enzymatic saccharification and removed lignin and xylan from waste rice hull (RCH). The study also demonstrated the morphological changes in RCH and the reduction in lignin surface area and hydrophobicity as possible reasons for the improved enzymatic hydrolysis efficiency. This work highlights the potential of functional and recoverable DESs in improving the efficiency of lignocellulose pretreatment in biorefineries.
BIORESOURCE TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Iwan Kiswanto, Lita Soetopo, Afifuddin Latif Adiredjo
Summary: A novel genetic locus for BPH resistance, named Bph44, was identified and mapped on the long arm of chromosome 4 through analysis of F2:3 populations and genomic analysis.
Article
Plant Sciences
Zhenyi Chang, Xia Wang, Xiaoying Pan, Wei Yan, Wenshi Wu, Yi Zhuang, Zhiai Li, Dan Wang, Shuting Yuan, Chunjue Xu, Zhufeng Chen, Dongfeng Liu, Zi Sheng Chen, Xiaoyan Tang, Jianxin Wu
Summary: This study found that OsP0A gene plays a crucial role in embryo development in rice, while OsP0B and OsP0C genes do not have visible defects when knocked out. These results highlight the importance of P0 genes in plant development.
Article
Plant Sciences
Dan Wang, Wenrui Zhang, Runqiang Zhang, Nan Tao, Liang Si, Changhong Guo
Summary: Nitrobenzene (NB) is a common toxic pollutant in industrial wastewater, and it has phytotoxic effects on rice seedlings, particularly on root growth. NB exposure reduces the chlorophyll content and the expression levels of chlorophyll synthesis genes in rice seedlings, and increases the accumulation of harmful substances such as reactive oxygen species. Additionally, NB induces the expression of antioxidant enzyme genes, but at high concentrations, it inhibits gene expression levels.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Agricultural Engineering
Polytimi Papavasileiou, Stamatis Koutras, Eleni Koutra, Sameh S. Ali, Michael Kornaros
Summary: This study utilized rice hull hydrolysate as a substrate for cultivating microalgae Botryococcus braunii in a two-stage cultivation system. The rice hull hydrolysate was optimized to maximize nutrients and minimize inhibitors content. The microalgae were successfully grown in the optimized substrate, resulting in high biomass production and high phenolic content in the produced biomass, demonstrating the potential of this novel biotechnological method.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Environmental
Gaoxiang Huang, Changfeng Ding, Naijia Guo, Mingjun Ding, Hua Zhang, Muhammad Kamran, Zhigao Zhou, Taolin Zhang, Xingxiang Wang
Summary: The study found that coating manganese can significantly reduce cadmium uptake by rice, particularly by inhibiting root absorption and internal transportation. The addition of lime increases soil pH and reduces extractable cadmium, but also decreases soil dissolved manganese, affecting cadmium control in rice. The combined addition of lime and coated manganese can effectively reduce cadmium content in rice.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Plant Sciences
Erstelle A. Pasion, Gopal Misra, Ajay Kohli, Nese Sreenivasulu
Summary: A comprehensive study was conducted to explore the genetic architecture of the brown rice ionome, revealing candidate genes and molecular mechanisms underlying micronutrient signatures. Functional pathways were identified using gene regulatory networks, providing important insights on ionome variations in rice and the genome-ionome relationships.
Review
Plant Sciences
A. Mishra, S. R. Barik, E. Pandit, S. S. Yadav, S. R. Das, S. K. Pradhan
Summary: Brown planthopper (BPH) is a phloem-sucking insect that causes severe damage to rice crops in Asian countries. This review provides an update on the latest research on resistance sources, identification of resistance genes, gene maps, cloning, and molecular mechanisms of resistance against BPH.
CRITICAL REVIEWS IN PLANT SCIENCES
(2022)
Article
Agronomy
Kittiya Kanngan, Phijittra Umalee, Khanobporn Tangtrakulwanich, Rungrote Nilthong, Somrudee Nilthong
Summary: This study investigated the genotyping of five BPH resistance genes in 143 upland rice varieties, revealing varying gene frequencies and the presence of one to five resistance genes in 139 of the varieties. Cluster analysis and molecular variance analysis indicated gene exchange between two subpopulations. The evaluation of resistance using the SEM system found a limited number of resistant varieties, moderate resistance in several varieties, and susceptibility in the majority. Significant correlations were found between the Bph3, Bph14, and Bph15 genes and BPH resistance.
Article
Agronomy
JangChol Kim, Xin An, Ke Yang, Si Miao, Yushi Qin, Yinxia Hu, Bo Du, Lili Zhu, Guangcun He, Rongzhi Chen
Summary: This study identified a new brown planthopper resistance gene Bph43 and mapped it to chromosome 11. The characterization of NIL-Bph43-9311 demonstrated that Bph43 confers strong antibiosis and antixenosis effects on the brown planthopper. Comparative transcriptome analysis revealed significant enrichment of genes related to defense response and resistance gene-dependent signaling pathway in BPH-infested NIL-Bph43-9311.
Article
Genetics & Heredity
Haijian Xia, Xiaoying Pu, Xiaoyang Zhu, Xiaomeng Yang, Haifeng Guo, Henan Diao, Quan Zhang, Yulong Wang, Xingming Sun, Hongliang Zhang, Zhanying Zhang, Yawen Zeng, Zichao Li
Summary: Flavonoids have important medicinal value in rice, and breeding rice varieties rich in flavonoids can prevent chronic diseases. The genetic basis of flavonoid content in rice and germplasm resources rich in flavonoids were identified through research, providing reference for breeding flavonoid-rich rice varieties.
Review
Biochemistry & Molecular Biology
Liuhui Yan, Tongping Luo, Dahui Huang, Minyi Wei, Zengfeng Ma, Chi Liu, Yuanyuan Qin, Xiaolong Zhou, Yingping Lu, Rongbai Li, Gang Qin, Yuexiong Zhang
Summary: Over half of the world's population relies on rice as their staple food. Breeding rice varieties that are resistant to the brown planthopper (BPH) is considered the most cost-effective and efficient strategy to mitigate BPH infestation. This review summarizes the latest advancements in the localization, cloning, molecular mechanisms, and breeding of BPH-resistant rice. Currently, a total of 70 BPH-resistant gene loci have been identified in rice, with 17 of them successfully cloned. These genes induce the deposition of callose and cell wall thickening in rice tissues, ultimately leading to the inhibition of BPH feeding and the formation of resistance mechanisms against BPH damage.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Long Lu, Zhongxiang Sun, Rumeng Wang, Yifei Du, Zaoli Zhang, Tao Lan, Yuanyuan Song, Rensen Zeng
Summary: The transcription factor OsSPL10 was found to play a negative role in rice defense against the brown planthopper (BPH). Knockout of the OsSPL10 gene enhanced rice resistance against BPH by upregulating defense-related genes and accumulating secondary metabolites. The findings suggest that OsSPL10 can be a potential target for genetic improvement of BPH resistance in rice.
PLANT CELL REPORTS
(2023)
Article
Spectroscopy
Shuiyang Luo, Xue Yuan, Ruiqing Liang, Kunsheng Feng, Haitao Xu, Jing Zhao, Shaokui Wang, Yubin Lan, Yongbing Long, Haidong Deng
Summary: A method utilizing hyperspectral image (HSI) technology to predict and visualize gene modulated ultralow Cd accumulation in rice grains is proposed. Regression models using Kernel-ridge (KRR) and random forest (RFR) algorithms are established to predict Cd contents based on full spectral data and dimension-reduced data. The visualization of predicted Cd accumulation in rice grains is achieved using the best regression model (KRR + TSVD). The results suggest that Vis-NIR HSI has great potential for detection and visualization of gene modulation induced ultralow Cd accumulation and transport in rice crops.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)