Article
Microbiology
Alexander L. A. Polidore, Lucia Furiassi, Paul J. Hergenrother, William W. Metcalf
Summary: The primary cause of onion center rot is Pantoea ananatis, which produces the key virulence factor pantaphos, a phosphonic acid compound with plant toxicity and activity against human cells. It has potential as an herbicide to combat herbicide-resistant weeds and offers new approaches to treating the significant plant disease.
Article
Biochemistry & Molecular Biology
Zilan Xiao, Jianping Deng, Xiaojun Zhou, Liyan Zhu, Xiaochan He, Jingwu Zheng, Deping Guo, Jingze Zhang
Summary: A new disease caused by Pantoea ananatis was discovered on Zizania latifolia, resulting in brown to dark brown streaks on the leaf sheaths and death of young plant leaves.
JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE B
(2022)
Article
Microbiology
Gaurav Agarwal, Divya Choudhary, Shaun P. Stice, Brendon K. Myers, Ronald D. Gitaitis, Stephanus N. Venter, Brian H. Kvitko, Bhabesh Dutta
Summary: The study identified chromosomal and plasmid gene clusters as well as novel genes associated with pathogenicity in Pantoea ananatis through a comprehensive pan-genome wide association study. These genes play a role in the development of center rot disease in onions.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Microbiology
Victor V. Samsonov, Anna A. Kuznetsova, Julia G. Rostova, Svetlana A. Samsonova, Mikhail K. Ziyatdinov, Michael Y. Kiriukhin
Summary: This study identified a novel family of D2HGDHs, named D2HGDHPa and D2HGDHEc, in Pantoea ananatis and Escherichia coli, respectively. These enzymes have strict substrate specificity towards D-2-HGA and can convert it back to 2-ketoglutarate. This discovery provides important information for the metabolic engineering of microbial chassis.
Article
Plant Sciences
Yan Yang, Congxi Cai, Yipeng Wang, Yanran Wang, Haolun Ju, Xuehao Chen
Summary: Cucumber glossiness, an important visual quality trait for consumers, is associated with cuticular wax accumulation. This study identified CsGLF1 as the gene responsible for the glossy trait in cucumber. CsGLF1 encodes a C2H2-type zinc finger protein 6 (ZFP6) and its deletion results in glossier pericarp and reduced cuticular wax accumulation. Transcriptomic analysis revealed downregulation of wax biosynthetic genes in the absence of CsZFP6. Transient expression assays showed that CsZFP6 acts as a transcription activator for cuticular wax biosynthetic genes. These findings provide new insights into the regulatory mechanism of fruit glossiness in cucumber.
HORTICULTURE RESEARCH
(2023)
Review
Plant Sciences
Hai He, Chizuko Yamamuro
Summary: Phytohormones auxin and gibberellic acid play a crucial role in the regulation of fruit development, and recent studies have provided new insights into their interaction mechanisms.
HORTICULTURE RESEARCH
(2022)
Article
Plant Sciences
Rakesh K. Upadhyay, Vaclav Motyka, Eva Pokorna, Petre I. Dobrev, Jozef Lacek, Jonathan Shao, Kim S. Lewers, Autar K. Mattoo
Summary: High performance liquid chromatography electrospray tandem-mass spectrometry (HPLC-ESI-MS/MS) was used to study the regulation of endogenous phytohormones in octoploid strawberries during fruit ripening. ABA, ACC, and iP were found to be associated with ripening, while ABA catabolites mimicked the pattern of climacteric decline. ACC accumulation and the presence of a large ACS gene family in octoploid strawberries suggest their involvement in fruit ripening.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Agronomy
Gang Ma, Lancui Zhang, Rin Kudaka, Hayato Inaba, Kan Murakami, Masashi Yamamoto, Nami Kojima, Masaki Yahata, Hikaru Matsumoto, Masaya Kato
Summary: The combined spraying of gibberellin and prohydrojasmon is effective in preventing peel puffing disorder in citrus fruit, although it inhibits carotenoid biosynthesis leading to poor fruit coloration. Postharvest treatments of auxins, indole-3-acetic acid and 1-naphthaleneacetic acid, can enhance carotenoid accumulation in fruit, improve coloration, and stimulate carotenoid biosynthesis by up-regulating biosynthetic genes and down-regulating catabolic gene. Ethylene production is also induced by the treatments, further promoting carotenoid biosynthesis.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2021)
Article
Microbiology
Brendon K. Myers, Gi Yoon Shin, Gaurav Agarwal, Shaun P. Stice, Ronald D. Gitaitis, Brian H. Kvitko, Bhabesh Dutta
Summary: This study investigated the genetic basis of pathogenicity in P. ananatis strains on different Allium species. Phenotype-dependent and phenotype-independent gene association analyses identified genes related to stress responses, toxin-antitoxin systems, flagellar motility, quorum sensing, and phosphonoglycan biosynthesis. Comparative genomics analysis further revealed a putative type III secretion system and other shared genes between different hosts.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Multidisciplinary Sciences
Xiaobai Li, Yan Hong, Aaron Jackson, Fangqi Guo
Summary: The study identified potential pathways associated with blueberry anthocyanin biosynthesis by deep sequencing sRNA, revealing the involvement of key genes and plant hormones in the regulation process.
SCIENTIFIC REPORTS
(2021)
Article
Agronomy
Yao Liu, Xingmeng Lei, Bing Deng, Ou Chen, Lili Deng, Kaifang Zeng
Summary: The present study investigated the effects of methionine on black spot rot caused by Alternaria alternata on jujube fruit and the underlying mechanism. The results showed that methionine at a concentration of 0.1 g L-1 could enhance disease resistance against A. alternata in jujube fruit by activating lignin biosynthesis. These findings suggest that methionine has the potential to be a safe and reliable alternative fungicide for controlling postharvest infection in fruit.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2022)
Article
Microbiology
Francesco Aloi, Mario Riolo, Simona Marianna Sanzani, Annamaria Mincuzzi, Antonio Ippolito, Ilenia Siciliano, Antonella Pane, Maria Lodovica Gullino, Santa Olga Cacciola
Summary: This study identified various Alternaria species in pomegranate fruit in southern Italy and found significant variations in their toxigenic profiles.
Article
Biochemistry & Molecular Biology
Ruihao Zhong, Junbin Wei, Bin Liu, Honghui Luo, Zhaoqi Zhang, Xuequn Pang, Fang Fang
Summary: This study identified the major proanthocyanidins (PAs) in litchi pericarp as (-)-epicatechin (EC) and several procyanidins (PCs). The EC and PC content decreased with fruit development. Nine PA biosynthesis-related genes were identified, including ANR1a, LAR1/2, and ANS1, which were highly correlated with changes in EC/PC content. Transcription factor genes such as MYB, bHLH, WRKY, and AP2 were found to play a regulatory role in PA biosynthesis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Ke Zhang, Hao Zhang, Yanyun Pan, Yanxiao Niu, Lin Guo, Yuru Ma, Shijun Tian, Jiarong Wei, Cong Wang, Xiubo Yang, Yunze Fu, Ping Qu, Liantao Liu, Yongjiang Zhang, Hongchun Sun, Zhiying Bai, Jingao Dong, Cundong Li, Xigang Liu
Summary: In plant stem cells, noncell-autonomous transcription factors, such as AUXIN RESPONSE FACTOR3 (ARF3), play a crucial role in coordinating cell-cell communication. ARF3 regulates the expression of boundary-specific genes to control organ arrangement and represses cytokinin activity and WUSCHEL expression to regulate meristem activity through cell-cell communication.
Article
Plant Sciences
Xiaobai Li, Jingyong Jiang, Zhen Chen, Aaron Jackson
Summary: Rubus chingii is a medicinal and nutritious fruit rich in flavonoids. Unlike other Rubus species, the biosynthesis of flavonoids in R. chingii decreases during fruit ripening, primarily consisting of flavanol-anthocyanins. The unique flavonoid pathways of R. chingii could potentially contribute to the genetic diversity of raspberry cultivars and improve fruit quality.
FRONTIERS IN PLANT SCIENCE
(2021)