Article
Biochemistry & Molecular Biology
Karthika Sriskantharajah, Walid El Kayal, Davoud Torkamaneh, Murali M. Ayyanath, Praveen K. Saxena, Alan J. Sullivan, Gopinadhan Paliyath, Jayasankar Subramanian
Summary: The study demonstrates that hexanal significantly improves fruit retention and firmness of 'Honeycrisp' apples, by modulating the expression levels of various genes and metabolites to reduce fruit drop, maintain fruit hardness, and enhance abscission resistance.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Wei-Han Chen, Zhi-Yi Jiang, Hsing-Fun Hsu, Chang-Hsien Yang
Summary: PaFYF1 and PaFYF2 in Phalaenopsis orchids were found to suppress flower senescence and abscission during early flower development. Through downregulation of ethylene signaling and abscission-related genes, they delayed the process of flower senescence and abscission.
PLANT AND CELL PHYSIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Emilia Wilmowicz, Agata Kucko, Juan De Dios Alche, Grazyna Czeszewska-Rosiak, Aleksandra Bogumila Florkiewicz, Malgorzata Kapusta, Jacek Karwaszewski
Summary: This study used immunofluorescence techniques to investigate the dynamic changes in cell wall compounds of lupine root nodules and flower abscission zone (AZ) under drought conditions. The results showed upregulation of extensins, galactans, arabinans, xylogalacturonan, and xyloglucans in both nodules and the AZ. Additionally, modifications in the localization of high- and low-methylated homogalacturonans and arabinogalactan proteins were detected in nodules.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Horticulture
Xuzhou Zhang, Bingqian Li, Xinzhe Zhang, Chao Wang, Zhengqun Zhang, Ping Sun
Summary: The application of exogenous ethephon can induce the production of endogenous ethylene in tea plants, leading to the abscission of tea flowers and flower buds. Ethephon treatment also increases the activities of important enzymes and alters the chemical compositions of tea plants, resulting in enhanced shoot length and production in the following early spring. Overall, ethephon effectively suppresses blooming and improves tea yield and quality to some extent.
SCIENTIA HORTICULTURAE
(2022)
Article
Plant Sciences
Yanli Liu, Linlong Ma, Dan Cao, Ziming Gong, Jing Fan, Hongju Hu, Xiaofang Jin
Summary: This study characterized cell wall proteome of C. sinensis leaves and identified a total of 501 CWPs and 195 N-glycoproteins, with 118 proteins in common. The identified CWPs are mainly related to plant cell wall formation and defense response, providing a potential insight into the mechanisms of fluoride detoxification in C. sinensis.
Article
Plant Sciences
Yunqing Yu, Getu Beyene, Justin Villmer, Keith E. Duncan, Hao Hu, Toni Johnson, Andrew N. Doust, Nigel J. Taylor, Elizabeth A. Kellogg
Summary: This study investigates the shattering mechanism in E. tef and finds that it differs significantly from other cereals, as it relies on programmed cell death and fracture of the cell walls. These findings lay the groundwork for understanding grain shattering in Eragrostis and improving shattering in E. tef.
Article
Plant Sciences
Lu Lu, Samiah Arif, Jun Myoung Yu, June Woo Lee, Young-Hoon Park, Mark Leo Tucker, Joonyup Kim
Summary: This study characterizes natural abscission variants in tomatoes and analyzes the gene expression patterns during flower abscission. It reveals a potential bimodal transcriptional regulation mechanism in the tomato IDA-HAE module associated with flower abscission.
Article
Plant Sciences
Yuan Shi, Bangqian Song, Qin Liang, Deding Su, Wang Lu, Yudong Liu, Zhengguo Li
Summary: Flower and fruit abscission is a crucial physiological process for horticultural plants, which is regulated by multiple factors including hormones, peptides, carbohydrates, polyamines, and cell wall modifying proteins. This review provides an overview of recent studies on the molecular regulatory mechanisms, structure and location of abscission zones, and other factors affecting flower and fruit abscission. The aim is to facilitate the understanding of flower and fruit abscission for horticultural plants.
HORTICULTURAL PLANT JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Agata Kucko, Juan de Dios Alche, Timothy John Tranbarger, Emilia Wilmowicz
Summary: Yellow lupine is an economically important crop and has been a great model for abscission processes due to extreme flower abortion in the abscission zone (AZ). AZ activation involves modifications of cell walls, membranes, and cellular structure. This study reveals lipid-associated changes, including upregulation of peroxidase in naturally active AZs, indicating disruption of redox balance and/or lipid peroxidation. Lipid-related processes also involve enzymes like lipase and LOX, as well as the accumulation of jasmonates with higher biological activity in flower AZ activation.
Article
Plant Sciences
Jun-Wen Yi, Yi Wang, Xiao-Sha Ma, Jie-Qiong Zhang, Ming-Lei Zhao, Xu-Ming Huang, Jian-Guo Li, Gui-Bing Hu, Hui-Cong Wang
Summary: The study revealed that LcERF2 plays a crucial role in mediating premature abscission in fruit crops by orchestrating cell wall metabolism and affecting pedicel growth. This is achieved, at least in part, by repressing the expression of the downstream target gene LcUGE, leading to changes in fruit abscission rates and pedicel characteristics.
Article
Plant Sciences
Emilia Wilmowicz, Agata Kucko, Timothy John Tranbarger, Maciej Ostrowski, Janusz Niedojadko, Jacek Karwaszewski, Dominika Kapuscinska, Katarzyna Panek
Summary: Understanding the mechanisms behind the activation of the abscission zone (AZ) in plants is important for improving crop yield and economic importance. The role of the INFLORESCENCE DEFICIENT IN ABSCISSION protein, particularly its functional fragment, EPIP peptide, has been studied. In this study, the impact of EPIP on ultrastructural changes, hormonal abscission stimulators, and phosphoproteins in the AZ of Lupinus luteus flowers was analyzed. The results showed that EPIP induced distinct modifications in the AZ, including upregulation of cell activity, degradation processes, and possible autophagy. EPIP also stimulated the biosynthesis of abscisic acid and ethylene in AZ cells, and phosphorylation of proteins was observed. Overall, this study provides new insights into the regulatory function of EPIP in abscission and offers opportunities to reduce excessive flower abscission in lupine.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2022)
Article
Plant Sciences
Kanokwan Thanomchit, Wachiraya Imsabai, Parichart Burns, Peter A. McAtee, Robert J. Schaffer, Andrew C. Allan, Saichol Ketsa
Summary: Following successful pollination, Dendrobium orchid flowers undergo rapid senescence. Compatible pollination results in faster ethylene production and more rapid development of senescence symptoms compared with non-pollinated or incompatible pollinated flowers. Pollination with compatible pollinia leads to higher expression of DenACS1 and DenACO1 genes. Incompatible pollinia reduce the expression of DenACS1 and DenACO1 genes in the perianth. DenERS1, DenEIL1, and DenERF1 genes show differential spatial regulation following compatible pollination. Compatible pollinia increase ethylene production, induce premature senescence, and suppress DenERS1 expression, while incompatible pollinia do not stimulate ethylene production or induce senescence but lead to higher DenERS1 expression in both the perianth and the column plus ovary.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2022)
Article
Plant Sciences
Agata Kucko, Aleksandra Bogumila Florkiewicz, Magdalena Wolska, Jakub Mietki, Malgorzata Kapusta, Krzysztof Domagalski, Emilia Wilmowicz
Summary: In this study, the researchers investigated the role of lipid-related enzymes and lipid-derived plant hormones in the flower abscission zone (AZ) of yellow lupine under drought conditions. They found that drought-induced lipid peroxidation in the AZ cells, leading to the upregulation of phospholipase D, lipoxygenase, and the accumulation of jasmonic acid (JA). They also observed the key steps of JA conjugation and signaling in response to drought stress. Overall, the activation of AZ during flower abscission is closely associated with lipid modifications and the induction of JA-related signaling pathways.
Article
Microbiology
Sean A. Wilson, Raveen K. J. Tank, Jamie K. Hobbs, Simon J. Foster, Ethan C. Garner
Summary: The only essential function of cell wall hydrolases in B. subtilis is to enable cell growth by expanding the wall, and LytE or CwlO alone is sufficient for this function.
Article
Plant Sciences
Rong Wang, Ruizhen Li, Lina Cheng, Xiaoyang Wang, Xin Fu, Xiufen Dong, Mingfang Qi, Caizhong Jiang, Tao Xu, Tianlai Li
Summary: Abscission of plant organs is controlled by various signals and environmental stimuli, involving multiple regulatory networks like auxin flux and ethylene production. Tonoplast intrinsic proteins play a crucial role in abscission by regulating H2O2 levels and water permeability. These proteins interact with cytoplasmic H2O2 and water influx to modulate the abscission process.
Article
Agronomy
Zeyang Bao, Qihang Zhou, Yan Yu, Wei Chen, Zhenfeng Yang, Shifeng Cao, Liyu Shi
Summary: Exogenous melatonin treatment can alleviate the chilling-induced browning in cold-stored peaches by upregulating gene expression and affecting DNA methylation levels to increase phenolic accumulation.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Guolong Li, Zhishu Tang, Zhongxing Song, Xinbo Shi, Changle Liu, Qiang Chen, Hongbo Liu
Summary: This study investigated the accumulation of flavonoids in Chinese sour jujube fruits from five different harvest times using a combined metabolomics and transcriptomics approach. A total of 1539 differentially accumulated metabolites (DAMs) and 11592 differentially expressed genes (DEGs) were identified. The biosynthetic pathways for flavonoids, flavones, and flavanols were significantly enriched. A regulatory network for flavonoids biosynthesis was built and key genes related to flavonoid biosynthesis were identified.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Xuejiao Zhang, Xiaoyuan Zheng, Ruirui Yang, Qihui Wang, Lu Bai, Di Gong, Ye Han, Dov Prusky, Yang Bi
Summary: UV-C radiation promotes flavonoid synthesis in potato tuber wounds during early healing by upregulating the expression and activities of key enzymes and transcription factors involved in the flavonoid synthesis pathway, as well as increasing ABA levels and signaling.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Jiaqi Xiao, Yunyun Xie, Xiangjin Kong, Kuan Peng, Hong Zhu, Yueming Jiang, Hongxia Qu
Summary: The study reveals the positive role of Ca2+ ATPase in litchi energy metabolism and senescence. Higher expression of LcACAs is associated with better storability in litchi cultivars. Additionally, LcACA2 is identified as a target of LcmiR482e and ATP application can downregulate the expression of LcmiR482e, contributing to delayed senescence in litchi.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Asunta Mukami, Bicko Steve Juma, Cecilia Mweu, Richard Oduor, Wilton Mbinda
Summary: This study employed the CRISPR-Cas9 system to mutate genes in cassava, resulting in an extended shelf life of cassava roots and improved yield stability and farmers' income.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Paulo Sergio Gularte, Samara Martins Zanella, Cristiano Andre Steffens, Marceli Buss, Janaiana Catarina da Silva, Willian Coser, Aquidauana Miqueloto, Cassandro Vidal Talamini do Amarante
Summary: This study evaluated the impact of nitric oxide application on fruit quality and anaerobic metabolism products. The results showed that nitric oxide at appropriate concentrations can reduce respiration and ethylene evolution rates, preserve firmness, and reduce metabolite production and decay incidence.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Yiting Li, Sicong You, Shasha Wu, Mengyao Wang, Jin Song, Weijie Lan, Kang Tu, Leiqing Pan
Summary: This study aimed to compare the discrimination ability and detection limit of visible and short-wave near-infrared hyperspectral imaging features and spectral information on early implicit bruised pears. Physical characteristics were more sensitive than chemical parameters for bruised pears during postharvest storage. The changes in spectral variations at specific wavelengths could explain the bruising changes in pears. Discrimination models based on selected spectral variables could effectively identify bruised pear areas, and the combination of imaging features and spectral variables achieved higher discrimination rates.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Yu Du, Mengyue Wang, Mengting Tong, Dengyun Wu, Jianzhou Chu, Xiaoqin Yao
Summary: This study investigated the effects of sucrose, brassinolide (BR), and their combination on the storage quality of kale sprouts. The results showed that the combined treatment improved the growth and development of sprouts, reduced oxidative stress, and inhibited nutrient loss. Furthermore, the combination treatment maintained the antioxidant capacity and nutrient content of kale sprouts.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Zhiwen Hu, Jing Wei, Weimin Zhang, Long Wu, Di Gong, Yue Xiang, Jialiang Liu, Zhengke Zhang
Summary: In this study, the researchers investigated the effect of melatonin (Mel) on the phytotoxicity and residues of the fungicide prochloraz (Pcz) in mango fruit during storage. The results showed that pretreatment with Mel reduced Pcz residues and alleviated phytotoxicity in the fruit. Mel also suppressed Pcz-induced oxidative stress and enhanced the detoxification capacity of the fruit.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Bin Duan, Okwong Oketch Reymick, Zhaoguo Liu, Yun Zhou, Xin Wang, Zhao Feng, Nengguo Tao
Summary: The monoterpene citral can enhance disease resistance and reduce fruit decay in postharvest citrus fruit. It increases the activity of certain enzymes and the content of specific compounds, as well as triggers the accumulation of plant hormones and metabolites. Gene expression analysis reveals that citral upregulates genes involved in the jasmonic acid pathway and phenylpropanoid biosynthesis.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Meiqi Li, Xinhua Zhang, Jiaoqi Li, Maratab Ali, Yuting Wang, Xiuling Liu, Fujun Li, Xiaoan Li
Summary: This research aimed to investigate the potential action mechanism of gamma-aminobutyric acid (GABA) in controlling Botrytis cinerea (B. cinerea) in tomato fruit. The findings showed that GABA treatment effectively reduced the disease incidence and lesion diameter of tomato fruit caused by B. cinerea. GABA triggered defense responses and up-regulated the expression of pathogenesis-related genes, while also inhibiting the expression of ethylene synthesis genes.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Heeduk Oh, Marti Pottorff, Lara Giongo, Charles M. Mainland, Massimo Iorizzo, Penelope Perkins-Veazie
Summary: This study evaluated a large set of blueberry cultivars to understand the relationship between mechanical texture and appearance characteristics at harvest and after storage, and tested multiple statistical models to predict shelf-life. The results showed that fruit characteristics measured at harvest or two weeks post-harvest can predict weight loss, texture change, and fruit wrinkling. These findings provide empirical data that blueberry breeders can use to select cultivars with extended shelf-life.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Haitao Yu, Liuli Song, Jingjing Han, Xiaoyu Yu, Yuzhen Wu, Zhifang Yu
Summary: This study found that H2S treatment can delay the senescence process of postharvest pakchoi by regulating antioxidant system, endogenous H2S and NO metabolism. H2S increased the activities of antioxidant enzymes by up-regulating the expression of enzyme genes, reducing the accumulation of harmful substances. Furthermore, H2S increased the content of cysteine and nitrate in pakchoi by regulating the expression of related genes and enzyme activities, thus slowing down the senescence of pakchoi.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Jasna Mastilovic, Zarko Kevresan, Dragan Kukolj, Renata Kovac, Dragana Ubiparip Samek, Stevan Stankovski, Gordana Ostojic, Marina Deric
Summary: This study analyzes the patent portfolio and trends of sensors in postharvest of fresh produce, providing insights into the development of sensing technologies in this area. China is the leading country in patent applications, and the patent themes include produce sorting and packaging, produce storage, and the development and application of sensors. The findings highlight the significant impact of these technologies on postharvest processes, particularly in quality and safety monitoring. Moreover, they are expected to facilitate the integration of artificial intelligence into postharvest processes, enhancing the coherence and efficiency of supply chains.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)
Article
Agronomy
Gal Nomberg, Gulab Chand Arya, Ekaterina Manasherova, Ofir Marinov, Oded Yarden, Hagai Cohen
Summary: Certain fleshy fruit species form a polyphenolic suberized peridermal skin to seal wounded skin and prevent invasion by pathogenic fungi.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2024)