Article
Plant Sciences
Jose F. Sanchez-Sevilla, Miguel A. Botella, Victoriano Valpuesta, Victoria Sanchez-Vera
Summary: Autophagy is a catabolic and recycling pathway essential for maintaining cellular homeostasis in plants. In cultivated strawberry fruits, autophagy occurs in two waves, characterized by differential expression of ATG genes and ATG8 lipidation. This process plays a significant role in fruit ripening, affecting growth and development.
FRONTIERS IN PLANT SCIENCE
(2021)
Review
Plant Sciences
Leepica Kapoor, Andrew J. Simkin, C. George Priya Doss, Ramamoorthy Siva
Summary: The synthesis, degradation, and retention of fruit pigments are regulated by multiple factors. Manipulating these regulatory mechanisms can enhance the desired pigments in fruits. Pigments are assets to ripened fruits, augmenting their nutritive value, antioxidant levels, and industrial potential, while also serving as a tool for harvest prediction.
Article
Plant Sciences
Maja Mikulic-Petkovsek, Anton Ivancic, Sasa Gacnik, Robert Veberic, Metka Hudina, Silvija Marinovic, Christian Molitor, Heidi Halbwirth
Summary: This study analyzed the changes in sugar content, organic acids, phenolic compounds, and selected enzyme activities in the anthocyanin pathway in NIGRA (Sambucus nigra var. nigra-black fruits) and VIRIDIS (S. nigra var. viridis-green fruits) fruits at four stages of ripening. The results showed that glucose and fructose content in green fruits were higher than in colored fruits, and sugar content increased significantly until the third developmental stage. NIGRA berries had a high content of anthocyanins and flavonols, while flavonols were the major phenolic group in VIRIDIS fruits. NIGRA fruits showed strong activation of the late anthocyanin pathway, while VIRIDIS fruits lacked anthocyanins and only had one flavanol.
Article
Biochemistry & Molecular Biology
Yuguang Zang, Yijia Yao, Zheshu Xu, Baoqing Wang, Yiqi Mao, Weilu Wang, Weiyang Zhang, Hao Zhang, Lijun Liu, Zhiqin Wang, Guohua Liang, Jianchang Yang, Yong Zhou, Junfei Gu
Summary: This study investigated the relationship between leaf senescence and crop yield by studying the overexpression and RNA interference lines of OsNYC3 gene, as well as applying exogenous phytohormones and AWMD treatment. The results showed that delayed senescence was detrimental to grain filling, while overexpression of OsNYC3, application of ABA, and AWMD treatment improved grain filling, especially for inferior spikelets.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Tong Ning, Chengjie Chen, Ganjun Yi, Houbin Chen, Yudi Liu, Yanjie Fan, Jing Liu, Shule Chen, Sixuan Wei, Zexuan Li, Yehuan Tan, Zhenting He, Chunxiang Xu
Summary: This study reveals the dynamic changes of HG in banana fruit development and ripening, as well as its correlation with fruit expansion, peel firmness, and epitope levels of antibodies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Plant Sciences
Ricardo Bianchetti, Nicolas Bellora, Luis A. de Haro, Rafael Zuccarelli, Daniele Rosado, Luciano Freschi, Magdalena Rossi, Luisa Bermudez
Summary: Phytochrome-mediated light and temperature perception plays an important role in regulating fruit development, ripening, and nutritional quality. This study reveals that the regulation of fruit development by Phytochrome involves epigenetic mechanisms, specifically DNA demethylation. The findings show that Phytochrome has a greater impact on the methylome and transcriptome of tomato fruits in the breaker stage compared to the immature green stage. Additionally, PHYB1B2 has a more substantial effect on ripening-associated methylation reprogramming. The study also uncovers a gene expression network involving chromatin organization factors and transcriptional regulators that mediate the PHYB1B2 signal transduction. These findings provide insights into how epigenetic mechanisms respond to environmental cues and affect agronomical traits.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Qing Li, Huai Yang, Jingwei Guo, Qianglan Huang, Shengfu Zhong, Feiquan Tan, Tianheng Ren, Zhi Li, Chen Chen, Peigao Luo
Summary: Leaf senescence is considered favorable for wheat seed yield improvement, but staying green may be a better strategy for further increasing yields. Comparative transcriptome analysis between two wheat cultivars showed that the stay-green phenotype had higher expression of genes related to leaf senescence, photosynthesis, chlorophyll metabolism, and antioxidative enzyme activity. These findings provide new insight into delaying leaf senescence and improving wheat yields.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agronomy
Jingyi Lv, Yingzhi Zhang, Weijie Tang, Jingxin Chen, Yonghong Ge, Jianrong Li
Summary: This study investigated the effects of different concentrations of methyl jasmonate (MeJA) treatment on chlorophyll degradation in postharvest apple fruit. The results showed that 10μM exogenous MeJA delayed degreening and ripening, while 1500μM MeJA had the opposite effects. MeJA regulated chlorophyll degradation in apple peel through the PAO pathway and chlorophyll oxidation, and the concentration of exogenous MeJA influenced the process.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Hangcong Chen, Zunyang Song, Lihua Wang, Xiuhua Lai, Weixin Chen, Xueping Li, Xiaoyang Zhu
Summary: Cold stress inhibits banana fruit ripening by affecting the softening and de-greening processes. The mechanism of ripening disorder caused by chilling injury (CI) in banana fruit is largely unknown. MaIAA17-like gene was found to be involved in fruit softening and de-greening in 'Fenjiao' banana.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemistry & Molecular Biology
Ying Chen, Wataru Yamori, Ayumi Tanaka, Ryouichi Tanaka, Hisashi Ito
Summary: During leaf senescence, the degradation of photosystems and photosynthetic pigments proceeds in a coordinated manner, with the degradation of photosystem II core complexes regulated independently of the major chlorophyll degradation pathway. The study provides insights into the complex molecular mechanisms underlying the degradation of photosystems, which is an essential step during leaf senescence.
Article
Plant Sciences
Yongfan Yu, Qiang Zhang, Sujing Sun, Jiading Yang
Summary: Upregulated expression of RBOHD, encoding a plasma membrane NADPH oxidase, is responsible for the lesion-mimic phenotype in detached Arabidopsis leaves with mutation of PHEIDE a OXYGENASE (PaO) during extended darkness. Scavenging H2O2 can alleviate the phenotype, while inhibition of NADPH oxidase or mutation of RBOHD suppresses its formation.
Article
Horticulture
Xiaoya Tao, Qiong Wu, Suqing Huang, Beiwei Zhu, Feng Chen, Bin Liu, Luyun Cai, Linchun Mao, Zisheng Luo, Li Li, Tiejin Ying
Summary: This research reveals that the plant hormone abscisic acid (ABA) plays a crucial role in the development and ripening of tomato fruit. Exogenous ABA was found to accelerate tomato fruit ripening and promote the accumulation of primary metabolites, such as sugars, organic acids, and amino acids. Additionally, ABA was shown to stimulate the expression of key genes involved in sugar and organic acid metabolism.
SCIENTIA HORTICULTURAE
(2022)
Article
Agronomy
Nadia Chibane, Marlon Caicedo, Susana Martinez, Purificacion Marcet, Pedro Revilla, Bernardo Ordas
Summary: Stay-green (SG) is a term used to describe genotypes with delayed leaf senescence, which can be favorable for grain yield, quality, double exploitation, and stress resistance. Studies show that SG genotypes absorb more nitrogen after flowering, although the remobilization efficiency is lower. However, the higher nitrogen uptake compensates for the poor remobilization, leading to favorable effects on grain nitrogen content and weight.
Article
Engineering, Chemical
Saowaluk Taechutrakul, Thananchai Piroonpan, Wanvimol Pasanphan
Summary: This original research developed active polylactic acid (PLA) film strips functionalized with gallic acid (GA) to extend the shelf-life of bananas. The PLA/mPLA-GA film strips exhibited a homogeneous matrix with improved mechanical properties and showed outstanding antioxidant and oxygen scavenging effects. The results suggest that PLA/mPLA-GA film strips show promise as an active bioplastic for extending the shelf-life of bananas and other fruits.
JOURNAL OF FOOD ENGINEERING
(2024)
Article
Plant Sciences
Yun Jiang, Zihang Shi, Wei Liu, Mingfang Qi, Tao Xu, Yuanhua Wu, Tianlai Li
Summary: This study discovered a subfamily F protein phosphatase, SlPP2C, which is associated with leaf senescence. The expression, protein accumulation, and promoter activity of SlPP2C increased gradually with the progression of leaf and flower senescence as well as fruit ripening in tomato. RNA interference of SlPP2C resulted in delayed senescence and ripening phenotypes in leaves, flowers, and fruits.
PHYSIOLOGIA PLANTARUM
(2023)