Article
Biochemistry & Molecular Biology
Hye-Yeon Seok, Sun-Young Lee, Swarnali Sarker, Md Bayzid, Yong-Hwan Moon
Summary: Plant roots exhibit distinct gene expression patterns compared to shoots under abiotic stress conditions. This study used mRNA sequencing to analyze the gene expression profiles of Arabidopsis roots subjected to osmotic stress caused by high salinity (NaCl) and drought (mannitol). The results showed significant changes in gene expression in the roots compared to the aerial parts under both NaCl and mannitol treatments. The study identified 68 transcription factor genes that are closely involved in osmotic stress signal transduction in roots. Additionally, alternative splice variants of 26 osmotic stress-responsive genes were found in the roots. The findings suggest that transcription factor families, alternative splicing, and resulting splice variants play important roles in the osmotic stress response in roots.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Jingwei Zhang, Dazhuang Huang, Xiaojie Zhao, Man Zhang, Qian Wang, Xueyan Hou, Dongliu Di, Beibei Su, Shaokun Wang, Pai Sun
Summary: This study isolated two WRKY genes from Iris germanica and found that they play an important role in the response to drought stress. Furthermore, through the study of transgenic Arabidopsis, it was discovered that IgWRKY50 and IgWRKY32 can improve the drought tolerance of plants.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Panfeng Yao, Chunli Zhang, Dan Zhang, Tianyuan Qin, Xiaofei Xie, Yuhui Liu, Zhen Liu, Jiangping Bai, Zhenzhen Bi, Junmei Cui, Jingwen Liang, Chao Sun
Summary: This study comprehensively investigated the StAAO gene family in potato, revealing that the StAAO2/4/6 genes have significant responses to drought stress and phytohormones. The findings lay the foundation for understanding the StAAO gene family and provide a potential genetic resource for breeding drought-resistant potato varieties.
Article
Plant Sciences
Qingyan Zhai, Hang Li, Na Wei, Jiyu Zhang, Wenxian Liu
Summary: The trihelix gene family plays a crucial role in metabolic pathways and stress responses in plants. However, little is known about its distribution and functions in Melilotus albus, particularly in response to drought stress. In this study, 34 MaGTs were identified and characterized, and seven potential candidate genes for drought tolerance were identified. A key finding is the significant upregulation of MaGT17 in response to drought stress in both roots and shoots. These findings provide important insights into the molecular mechanisms and responses of trihelix proteins in M. albus.
Article
Plant Sciences
Boya Venkatesh, Amaranatha R. Vennapusa, Nulu Jagadeesh Kumar, N. Jayamma, B. Manohara Reddy, A. M. Anthony Johnson, K. V. Madhusudan, Merum Pandurangaiah, K. Kiranmai, Chinta Sudhakar
Summary: This study demonstrates that introducing multiple stress-responsive regulatory transcription factors (TFs) simultaneously in groundnut can enhance its drought stress resistance. The multigene transgenic plants showed improved antioxidative defense mechanisms, better water status, and enhanced growth characteristics under drought stress. This research is of great importance for improving stress tolerance and productivity in crops under drought stress.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Cuiping Zhang, Lijing Lu, Ruolin Gong, Xing Su, Fengbo Liu, Ru Zhang, Jihong Hu
Summary: Trihelix (TH) proteins, as plant-specific transcription factors, play important roles in plant growth, development, and stress responses. However, the function of TH genes in Brassica napus and their evolution and differentiation patterns in Brassica plants are still unclear. In this study, we identified and classified 455 TH genes in Brassica species and Arabidopsis. The analyses revealed the conservation and variation of TH protein motifs and gene structures. The expansion of TH genes in tetraploid species was found to be due to hetero-tetraploidization and gene duplication events. Comparative analysis showed significant expansion of GT-2 and SIP1 genes during evolution. Differential expression of BnaTH genes under various stresses suggests their involvement in stress responses. The presence of stress-responsive cis-elements in the promoter region indicates the potential of BnaTH genes to cope with diverse environments. qRT-PCR analyses confirmed the response of TH genes to abiotic stresses. These findings provide valuable information and candidate genes for further studying the role of TH genes in stress resistance of B. napus.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Hui Liu, Songbo Song, Mengyao Liu, Yangwei Mu, Ying Li, Yuxin Xuan, Liangjie Niu, Hui Zhang, Wei Wang
Summary: In this study, an NAC transcription factor ZmNAC20 was identified and found to regulate drought stress response in maize. Overexpression of ZmNAC20 improved drought resistance in maize by promoting stomatal closure and activating the expression of stress-responsible genes. These findings provide valuable insights and new clues for improving crop drought resistance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Genetics & Heredity
Lei Ren, Tingting Zhang, Haixia Wu, Xinyu Ge, Huihui Wan, Shengyong Chen, Zongyun Li, Daifu Ma, Aimin Wang
Summary: The miR319 gene family in sweet potato has two members, IbmiR319a and IbmiR319c. IbmiR319a plays a crucial role in the response to drought stress in sweet potato by affecting plant architecture and lignin biosynthesis. Blocking IbmiR319a results in a slender phenotype, increased sensitivity to drought stress, and changes in cell morphology and stomatal distribution. The lignin content is reduced in plants with blocked IbmiR319a, leading to increased brittleness.
Article
Genetics & Heredity
Haifeng Yan, Guohua Ma, Jaime A. Teixeira da Silva, Lihang Qiu, Juan Xu, Huiwen Zhou, Minzheng Wei, Jun Xiong, Mingzhi Li, Shaohuan Zhou, Jianming Wu, Xiuhua Tang
Summary: This study conducted a comprehensive survey of NAC family genes in two wild relatives of sweet potato, revealing their important roles in genetic evolution and stress response. Tandem duplication was shown to play a significant role in gene expansion and evolution, and gene expression patterns indicated their potential involvement in organ development and stress response.
FRONTIERS IN GENETICS
(2021)
Article
Biochemistry & Molecular Biology
Yuchen Zheng, Xueying Jin, Jingyi Wang, Wei Chen, Zhen Yang, Yaxin Chen, Yonghua Yang, Guihua Lu, Bo Sun
Summary: Drought stress severely affects cereal crop yield. This study characterized a sorghum NAC gene, SbNAC9, and found that it is highly induced by PEG-simulated dehydration treatments. Overexpression of SbNAC9 in sorghum seedlings enhances drought stress tolerance, while silencing SbNAC9 weakens it. SbNAC9 also activates genes related to ROS scavenging and ABA biosynthesis. These findings highlight the important role of SbNAC9 in sorghum's response to drought stress and offer insights for genetic improvement of other crops.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Qi Wang, Cun Guo, Zhiyuan Li, Jinhao Sun, Dong Wang, Liangtao Xu, Xiaoxu Li, Yongfeng Guo
Summary: In this study, 49 bZIP transcription factor-encoding genes were identified and analyzed on the potato genome. These genes were found to be located on 12 chromosomes of the potato genome, displaying functional diversity. Syntenic analysis revealed gene duplication events that contribute to the expansion of the bZIP gene family in potato.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Huimin Zhao, Yani Niu, Hao Dong, Yaqi Jia, Yucheng Wang
Summary: The study identified two S1Fa-like TF genes, PtS1Fa1 and PtS1Fa2, in Populus trichocarpa. While PtS1Fa1 did not show significant effects, overexpression of PtS1Fa2 increased antioxidant activity and reduced ROS accumulation, playing a crucial role in drought tolerance in the plant.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Agronomy
Yang Feng, Senlin Zeng, Jinping Yan, Kunzhi Li, Huini Xu
Summary: This study identified 14 non-redundant SlMYC genes in the tomato genome, distributed across 12 chromosomes with 4 syntenic pairs. Phylogenetic analysis classified the SlMYC genes into four classes and predicted their functional domains. The expression of SlMYC genes differed across organs, showing upregulation after methyl jasmonate treatment and downregulation after sodium chloride treatment. CRISPR/Cas9-mediated loss-of-function of SlMYC1 resulted in reduced resistance to salt and mannitol stress in tomato plants.
Article
Plant Sciences
Zhen Wang, Xu Li, Xiao-ru Gao, Zhuo-ru Dai, Kui Peng, Li-cong Jia, Yin-kui Wu, Qing-chang Liu, Hong Zhai, Shao-pei Gao, Ning Zhao, Shao-zhen He, Huan Zhang
Summary: This study reveals the regulatory role of the IbMYB73-IbGER5 module in root development and abiotic stress tolerance in sweet potato, providing candidate genes for the development of elite crop varieties with well-developed root-mediated abiotic stress tolerance.
Article
Forestry
Jiaojiao Wu, Jingyan Wang, Wenkai Hui, Feiyan Zhao, Peiyun Wang, Chengyi Su, Wei Gong
Summary: This review discusses the impact of drought and waterlogging on plants and their mechanisms. Both drought and waterlogging stress affect leaf morphology and photosynthesis, and plants enhance their resistance to these stresses by producing key enzymes. The closure of leaf stomata and the formation of aerenchymal in the root system are important mechanisms for plant adaptation to water stress.
