Article
Horticulture
Manish Kumar, Saritha Raman Kavalappara, Theodore Mcavoy, Samuel Hutton, Alvin M. Simmons, Sudeep Bag
Summary: Tomato production in the USA has been greatly affected by the tomato yellow leaf curl virus (TYLCV). A recent discovery revealed a complex association between whitefly-transmitted TYLCV and tomato chlorosis virus (ToCV) in tomatoes. The testing of TYLCV-resistant cultivars in Georgia showed a steady increase in disease severity, and further analysis confirmed the presence of both TYLCV and ToCV in infected leaves. The mixed infection of TYLCV and ToCV resulted in severe disease development, posing a threat to tomato plants' resistance and overall productivity.
Article
Genetics & Heredity
Muhammad Qasim Aslam, Athar Hussain, Afzal Akram, Sonia Hussain, Rubab Zahra Naqvi, Imran Amin, Muhammad Saeed, Shahid Mansoor
Summary: This study functionally validated Mi-1.2-like orthologs in five whitefly hosts and found differential regulation of the Mi-1.2-like gene in various tissue types and under different stresses. The results suggest that Mi-1.2-like R genes could be potential candidates for enhancing whitefly resistance in cotton plants.
Article
Plant Sciences
Abolfazl Hajihassani, Josiah Marquez, Moges Woldemeskel, Negin Hamidi
Summary: Meloidogyne incognita, the most predominant plant-parasitic nematode species of tomato, causes significant yield loss. Four naturally occurring virulent populations of M. incognita were found in vegetable fields in Georgia. These populations were able to reproduce on tomato cultivars with the Mi-1 gene, indicating resistance-breaking capabilities.
Article
Plant Sciences
Susana Pascual, Clara I. Rodriguez-alvarez, Isgouhi Kaloshian, Gloria Nombela
Summary: The Mi-1 gene in tomato provides resistance against nematodes and insects, but the resistance mechanisms differ depending on the harmful organism. The Hsp90 gene has been shown to be involved in the Mi-1-mediated resistance for nematodes and aphids, but its role in resistance to whiteflies was unclear. This study demonstrates that the Hsp90 gene is required for the Mi-1-mediated resistance to whiteflies, supporting the hypothesis of a common model for resistance against nematodes and insects.
Article
Plant Sciences
Jang Hee Lee, Dae Jun Chung, Je Min Lee, Inhwa Yeam
Summary: Tomato yellow leaf curl virus (TYLCV) is a major threat to tomato production worldwide, with resistance genes such as Ty-2 showing potential for enhancing resistance. Gene-pyramiding can improve resistance levels, and breeding lines containing both Ty-1 and Ty-2 demonstrate the strongest resistance to TYLCV in field and artificial infections.
Article
Biochemistry & Molecular Biology
Xian Wang, Baoqiang Wang, Xiaolin Zhu, Ying Zhao, Baoxia Jin, Xiaohong Wei
Summary: Exogenous NO enhances resistance in tomatoes by regulating peptidase inhibitor genes, reducing virus content and disease index, and improving photosynthesis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Corien M. Voorburg, Yuling Bai, Richard Kormelink
Summary: Tomato line with the Ty-1 gene shows enhanced resistance to geminiviruses through increased levels of vsiRNAs and cytosine methylation of viral DNA. The presence of Ty-1 leads to higher levels of 22 and 24 nt vsiRNAs, indicating an enhanced antiviral response in the form of TGS.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Beatriz Romero-Rodriguez, Marko Petek, Chen Jiao, Maja Kriznik, Maja Zagorscak, Zhangjun Fei, Eduardo R. Bejarano, Kristina Gruden, Araceli G. Castillo
Summary: By conducting a comprehensive study on the changes at transcriptional, post-transcriptional, and epigenetic levels in tomato during TYLCV infection, we identified the main altered regulatory pathways and discovered new molecular mechanisms related to infection.
Article
Plant Sciences
Jing-Ru Zhang, Shu-Sheng Liu, Li-Long Pan
Summary: The study found that age-related resistance against TYLCV is more pronounced in tomato cultivars with higher basal resistance, suggesting that salicylic acid may play a major role in the development of ARR.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
Chihiro Furumizu, Shinichiro Sawa
Summary: Molecular markers have revolutionized plant breeding by enhancing the accuracy and efficiency of trait selection. The development of a new CAPS marker, Mi1713, for the root-knot nematode resistance gene, Mi-1.2, in cultivated tomato, has provided a rapid and reliable screening tool for the presence of Mi-1.2. This approach can be extended to design CAPS markers for other genes or alleles of interest in tomato and other crops.
PLANT BIOTECHNOLOGY
(2023)
Article
Horticulture
Liuxia Song, Yinlei Wang, Liping Zhao, Tongmin Zhao
Summary: This study investigated the differences between a TYLCV-resistant cultivar and a susceptible line through transcriptome profiling, revealing the importance of phytohormones in defending against TYLCV in tomatoes.
Article
Plant Sciences
Zhangjian Hu, Junying Shi, Shuxian Feng, Xiaodan Wu, Shujun Shao, Kai Shi
Summary: The lipid-derived molecules N-acylethanolamines (NAEs) have diverse immune functions in mammals, but their roles and mechanisms in plant defense response to changing environment are not well understood. This study found that exogenous NAE18:0 and NAE18:2 enhanced defense against one pathogen but suppressed defense against another pathogen in tomato. Genetic analysis revealed that the NAE pathway plays a crucial role in plant defense response. Moreover, the NAE pathway is influenced by elevated CO2 and temperature, and its inhibition leads to alteration of environment-mediated defense variations in tomato.
HORTICULTURE RESEARCH
(2023)
Review
Microbiology
Zhe Yan, Anne-Marie A. Wolters, Jesus Navas-Castillo, Yuling Bai
Summary: Tomato yellow leaf curl disease caused by tomato yellow leaf curl virus has led to significant economic problems in tomato production worldwide. Breeding for host plant resistance, particularly by identifying and utilizing specific resistance genes, has been effective in controlling the disease. Additionally, the identification of novel sources of resistance in wild tomato species provides potential for broader and sustainable resistance to begomoviruses.
Article
Agriculture, Multidisciplinary
Marcia Gabriel, Stela M. Kulczynski, Marcilene F. A. Santos, Caio F. B. Souza, Marlove F. B. Muniz, Leonardo S. Boiteux, Regina M. D. G. Carneiro
Summary: A Mi-1.2 gene-virulent population of root-knot nematode, Meloidogyne javanica, was found in southern Brazil, which has the ability to overcome the Mi-1.2 resistance gene and cause severe gall symptoms in tomato plants, posing a potential threat to the tomato agribusiness sector.
JOURNAL OF PLANT DISEASES AND PROTECTION
(2022)
Article
Plant Sciences
Annum Khalid, Xi Zhang, Huaijin Ji, Muhammad Yasir, Tariq Farooq, Xinyi Dai, Feng Li
Summary: Tomato yellow leaf curl disease (TYLCD) caused by tomato yellow leaf curl virus (TYLCV)-like species (TYLCLV) is a major limiting factor for tomato production. Artificial microRNA (AMIR) technology was used to create viral resistance by expressing 14 amiRNAs targeting conserved regions in seven TYLCLV genes and their satellite DNA. Results showed that pAMIN14 transgenic lines had a more effective resistance than pAMIE14 transgenic lines, reaching a level comparable to plants carrying the TY1 resistance gene.
Article
Plant Sciences
Huijuan Guo, Xinhong Peng, Liyuan Gu, Jianqiang Wu, Feng Ge, Yucheng Sun
JOURNAL OF EXPERIMENTAL BOTANY
(2017)
Article
Plant Sciences
Yucheng Sun, Huijuan Guo, Erliang Yuan, Feng Ge
Article
Agronomy
Jing Gao, Huijuan Guo, Yucheng Sun, Feng Ge
PEST MANAGEMENT SCIENCE
(2018)
Article
Multidisciplinary Sciences
Hongyu Yan, Honggang Guo, Erliang Yuan, Yucheng Sun, Feng Ge
SCIENTIFIC REPORTS
(2018)
Article
Plant Sciences
Honggang Guo, Yucheng Sun, Hongyu Yan, Chuanyou Li, Feng Ge
FRONTIERS IN PLANT SCIENCE
(2018)
Correction
Plant Sciences
Honggang Guo, Yucheng Sun, Hongyu Yan, Chuanyou Li, Feng Ge
FRONTIERS IN PLANT SCIENCE
(2018)
Article
Plant Sciences
Huijuan Guo, Liyuan Gu, Fanqi Liu, Fajun Chen, Feng Ge, Yucheng Sun
Article
Plant Sciences
Honggang Guo, Yucheng Sun, Hongyu Yan, Chuanyou Li, Feng Ge
FRONTIERS IN PLANT SCIENCE
(2020)
Article
Plant Sciences
Qinyang Wang, Erliang Yuan, Xiaoyu Ling, Keyan Zhu-Salzman, Huijuan Guo, Feng Ge, Yucheng Sun
PLANT CELL AND ENVIRONMENT
(2020)
Article
Biology
Shifan Wang, Huijuan Guo, Feng Ge, Yucheng Sun
Article
Biochemistry & Molecular Biology
Huijuan Guo, Yanjing Zhang, Jiahui Tong, Panpan Ge, Qinyang Wang, Zihua Zhao, Keyan Zhu-Salzman, Saskia A. Hogenhout, Feng Ge, Yucheng Sun
Article
Plant Sciences
Huijuan Guo, Panpan Ge, Jiahui Tong, Yanjing Zhang, Xinhong Peng, Zihua Zhao, Feng Ge, Yucheng Sun
Summary: Plant viruses can cause plant diseases, with the severity and spread of symptoms potentially impacted by climate change; elevated CO2 levels can reduce virus disease severity in some plants, possibly enhancing plant defense mechanisms; studies suggest that reduced disease occurrence under enhanced CO2 levels may be the norm.
Article
Agronomy
Xiaoyu Ling, Shimin Gu, Caihong Tian, Huijuan Guo, Thomas Degen, Ted C. J. Turlings, Feng Ge, Yucheng Sun
Summary: This study investigated the elicitors in insect oral secretions from seven lepidopteran insects with varying associations with maize plants. New pests were found to have higher total contents of FACs in their oral secretions, leading to increased maize emissions. Variations in FACs may be due to differences in internal FAC degradation and fatty acid excretion.
PEST MANAGEMENT SCIENCE
(2021)
Article
Multidisciplinary Sciences
Shifan Wang, Huijuan Guo, Keyan Zhu-Salzman, Feng Ge, Yucheng Sun
Summary: Apoptosis and autophagy are two common forms of programmed cell death used by host organisms to fight against virus infection. In this study, researchers found that the coat protein (CP) of an insect-borne plant virus TYLCV interacts with a phosphatidylethanolamine-binding protein (PEBP) in its vector whitefly, leading to the activation of apoptosis and autophagy in the whitefly, affecting viral load. The results suggest that the viral load is predominantly determined by autophagy rather than apoptosis.
NATURE COMMUNICATIONS
(2022)
Editorial Material
Cell Biology
Shifan Wang, Huijuan Guo, Feng Ge, Yucheng Sun
Summary: Apoptosis and autophagy are two important processes for host intracellular immunity against virus infection. A study on tomato yellow leaf curl virus (TYLCV) infected whiteflies revealed that the virus hijacks a master regulator called PEBP4 to activate apoptosis and autophagy simultaneously. The viral coat protein (CP) captures membrane-localized PEBP4, stabilizing its association with RAF1. This triple complex blocks a MAPK phosphorylation cascade and triggers apoptosis. At the same time, the CP competes for PEBP4 binding, promoting the disassociation of PEBP4 from ATG8 and initiating autophagy. Apoptosis increases the viral load, while autophagy degrades the virus. Only a balanced immune response involving both apoptosis and autophagy allows long-term coexistence between vectors and arboviruses.