Article
Plant Sciences
Chenying Gao, Cuixiao Li, Ziyi Li, Yaoxin Liu, Jiaming Li, Jun Guo, Jiana Mao, Fang Fang, Cheng Wang, Xiaoling Deng, Zheng Zheng
Summary: Citrus Huanglongbing (HLB) is a serious threat to the global citrus industry. This study identified citrus genotypes that are tolerant or susceptible to HLB through graft assays. Transcriptomic analysis revealed significant differences in gene expression related to HLB between tolerant and susceptible cultivars. This study provides valuable insights into the mechanisms of tolerance and sensitivity to HLB.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Qing Chen, Ailing Min, Shu Luo, Jinwei He, Runqin Wu, Ximeng Lin, Yan Wang, Wen He, Yunting Zhang, Yuanxiu Lin, Mengyao Li, Yong Zhang, Ya Luo, Haoru Tang, Xiaorong Wang
Summary: This study investigated the response of a Citrus junos rootstock to Huanglongbing disease. The results showed that the summer flushes and roots were impaired after 15 weeks of infection, and the chlorophyll pigments and photosynthetic rate were compromised. Metabolomic analysis revealed differential accumulation of metabolites in the affected leaves and roots, indicating distinct responses to the disease.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Joon Hyuk Suh, Xixuan Tang, Yi Zhang, Frederick G. Gmitter, Yu Wang
Summary: This study used a multiple pathway-targeted metabolomic approach to elucidate the metabolic mechanisms of HLB tolerance in citrus. The findings revealed a pivotal metabolic network associated with HLB tolerance, showing that pathways linked to plant growth, phloem regeneration, and energy-yielding metabolism were upregulated in HLB-tolerant cultivars. Additionally, metabolites related to plant defense responses were decreased in the tolerant group, indicating a strategy of sustaining plant growth and phloem formation rather than direct plant defense against the disease.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Chunzhen Cheng, Yun Zhong, Bin Wang, Yongyan Zhang, Huan Wu, Nonghui Jiang, Bo Wu, Yuanda Lv, Bo Jiang
Summary: This study found that the upregulated expression of the RIN4 gene in citrus infected with HLB may aid the infection of Candidatus Liberibacter asiaticus.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Xiaoqing Cui, Xuanlin Zhan, Yangyang Liu, Zhenhui Huang, Xiaoling Deng, Zheng Zheng, Meirong Xu
Summary: This study analyzed the genes and metabolites related to Candidatus Liberibacter asiaticus (CLas) infection in citrus fruits. The results showed that defense-related gene expression and metabolite accumulation were significantly decreased in infected fruits, while the expression of genes related to beta-glucosidase and endoglucanase was up-regulated. Additionally, the composition of infected fruits differed from leaf midribs.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Kellee Britt-Ugartemendia, Donielle Turner, Peggy Sieburth, Ozgur Batuman, Amit Levy
Summary: The citrus industry in Florida is facing challenges from two destructive diseases, citrus tristeza and Huanglongbing (HLB). This study found sequences of citrus tristeza virus (CTV) in Asian citrus psyllids (ACP), the insect vector of HLB. The incidence of CTV in ACP nymphs was similar to that in citrus tissue, but with less time and resources required for detection.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Mathematics, Applied
Monica Helena Ribeiro Luiz, Lucy Tiemi Takahashi, Rodney Carlos Bassanezi
Summary: Brazil is the largest citrus-producing region in the world, with three out of every five glasses of orange juice consumed globally being produced in Brazil. Along with the growth of the citrus industry, there has been an emergence of diseases that affect citrus trees. This paper presents two mathematical models to describe the dynamics and chemical control of citrus diseases, focusing on the devastating Huanglongbing disease.
COMPUTATIONAL & APPLIED MATHEMATICS
(2021)
Article
Agronomy
Diego M. Viteri, Consuelo Estevez de Jensen, Evelio Hernandez
Summary: The study evaluated the response of citrus germplasm from Puerto Rico to Huanglongbing, identifying genotypes like 'Lares' and 'Padilla' with higher incidence and severity, while 'Fronton', 'PR-Sel-1', and 'Rico 7-376' showed lower HLB incidence and severity. Different genotypes reacted differently to HLB depending on the rootstock used.
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Feiyan Wang, Congyi Zhu, Ruimin Zhang, Yongjing Huang, Wen Wu, Jiezhong Chen, Jiwu Zeng
Summary: This study used 16S rRNA-seq to investigate the effects of Candidatus Liberibacter asiaticus (CLas) on the microbial community structure of citrus pericarp tissues with normal or abnormal pigments. The results showed significant differences in alpha and beta diversity as well as composition between the two types of pericarp tissues. CLas decreased the relative abundance of pericarp microbiota, and it also affected the functional properties of the microbial community. These findings provide valuable insights into the composition of CLas-affected citrus pericarps and contribute to the development of biological control strategies against Huanglongbing.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Ruixuan Pan, Yanling Chen, Xiaoling Deng, Meirong Xu
Summary: The study found that heat treatment can effectively reduce the expression of clock-related genes in chloroplasts and upregulate the RNA editing process in mitochondria in CLas-infected mandarin trees. Additionally, the expression of genes related to phenylpropanoid and flavonoid biosynthesis, as well as auxin-induced genes, were suppressed. The defense response pathway of treated diseased trees was disrupted, indicated by the downregulation of LRR receptor-like serine/threonine-protein kinase FLS2 gene.
HORTICULTURAL PLANT JOURNAL
(2021)
Article
Agronomy
Jian Li, Pengfei He, Pengbo He, Yongmei Li, Yixin Wu, Zhanjun Lu, Xingyu Li, Yongchao Yang, Yuehu Wang, Jun Guo, Shahzad Munir, Yueqiu He
Summary: The study found that Bacillus subtilis L1-21 can effectively reduce the quantity of CLas pathogen in ACP, while easily colonizing the midgut of ACP. The highest colonization of endophyte L1-21 was observed in ACP after feeding on new citrus leaves. Psyllids carrying endophyte L1-21 after feeding on citrus leaves were able to reduce the CLas pathogen quantity in citrus leaves.
PEST MANAGEMENT SCIENCE
(2022)
Article
Plant Sciences
Muqing Zhang, Palaniyandi Karuppaiya, Desen Zheng, Xiuxiu Sun, Jinhe Bai, Rhuanito S. Ferrarezi, Charles A. Powell, Yongping Duan
Summary: The study found that penicillin (PEN) with surfactant is the most effective treatment to suppress the pathogen of Huanglongbing, leading to improved fruit quality and soluble solids content in infected citrus trees. Additionally, treatments with Fosetyl-Al (ALI) and penicillin (PEN) were shown to increase nitrogen and zinc levels in plant leaves, while reducing levels of calcium, copper, iron, manganese, and sulfur.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Agronomy
Wellington Ivo Eduardo, Marcelo Pedreira Miranda, Haroldo Xavier Linhares Volpe, Rafael Brandao Garcia, Eduardo Augusto Girardi, Berta Alquezar, Ana Espinosa Ruiz, Leandro Pena
Summary: The study found that Eremocitrus glauca and M. warburgiana genotypes exhibit greater resistance to D. citri, with higher trichome density and unique volatile emissions potentially serving as mechanisms of resistance.
PEST MANAGEMENT SCIENCE
(2022)
Article
Plant Sciences
Laudecir L. Raiol-Junior, Juan C. Cifuentes-Arenas, Everton de Carvalho, Eduardo A. Girardi, Silvio A. Lopes
Summary: Las, associated with HLB, moves laterally through phloem in plants, predominantly towards newly developing root and leaf tissues. Protecting rapidly growing shoots from feeding by D. citri is crucial to minimize transmission and spread of the pathogen.
Article
Infectious Diseases
Faraj Hijaz, Yasser Nehela, Ozgur Batuman, Nabil Killiny
Summary: The study investigated the use of citrate for detecting oxytetracycline in citrus tissues, revealing that plant matrix reduced fluorescence intensity of the europium complex and accelerated phenol degradation. By cleaning sample extracts with solid-phase extraction, successful measurement of OTC levels was achieved.