Ethylene and 1-MCP treatments affect leaf abscission and associated metabolism of Chinese cabbage

Meng, Jiao; Zhou, Qian; Zhou, Xin; Fang, Huixin; Ji, Shujuan

doi:10.1016/j.postharvbio.2019.110963

Cited by 17 publications

(5 citation statements)

References 53 publications

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“…Additionally, cytoplasmic EIN2 can also suppress the translation of EIN3 BINDING F‐box 1 (EBF1) and EBF2 (Merchante et al ., 2015; Li et al ., 2015c). To date, the expression of genes involved in ET biosynthesis and signaling has been shown to be changed during the ET‐induced organ abscission in many species (Rasori et al ., 2002; Dal Cin et al ., 2005; Agusti et al ., 2008; Mishra et al ., 2008; Botton et al ., 2011; Sundaresan et al ., 2015a,b; Li et al ., 2015a; Gao et al ., 2019; Meng et al ., 2019; Singh et al ., 2019). Furthermore, regulatory genes involved in ET signaling have been revealed to have a positive effect on abscission.…”

Section: Introductionmentioning

confidence: 99%

LcEIL2/3 are involved in fruitlet abscission via activating genes related to ethylene biosynthesis and cell wall remodeling in litchi

Yao

et al. 2020

The Plant Journal

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Summary Fruit crops are subject to precocious fruit abscission, during which the phytohormone ethylene (ET) acts as a major positive regulator. However, the molecular basis of ET‐induced fruit abscission remains poorly understood. Here, we show that two ETHYLENE INSENSITIVE 3‐like (EIL) homologs in litchi, LcEIL2 and LcEIL3, play a role in ET‐activated fruitlet abscission. LcEIL2/3 were significantly upregulated in the fruit abscission zone (AZ) during the ET‐induced fruitlet abscission in litchi. The presence of LcEIL2/3 in wild‐type Arabidopsis and ein3 eil1 mutants can accelerate the floral organ abscission. Moreover, the electrophoretic mobility shift assay and dual luciferase reporter analysis illustrated that LcEIL2/3 directly interacted with the gene promoters to activate the expression of cell wall remodeling genes LcCEL2/8 and LcPG1/2, and ET biosynthetic genes LcACS1/4/7 and LcACO2/3. Furthermore, we showed that LcPG1/2 were expressed in the floral abscission zone of Arabidopsis, and constitutive expression of LcPG2 in Arabidopsis promoted the floral organ abscission. In conclusion, we propose that LcEIL2/3 are involved in ET‐induced fruitlet abscission via controlling expression of genes related to ET biosynthesis and cell wall remodeling in litchi.

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Section: Introductionmentioning

confidence: 99%

LcEIL2/3 are involved in fruitlet abscission via activating genes related to ethylene biosynthesis and cell wall remodeling in litchi

Yao

et al. 2020

The Plant Journal

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“…For example, OeEIL2 was upregulated under ET treatment and was identified to be associated with mature fruit abscission in olive (Parra-Lobato and Gomez-Jimenez, 2011). ET treatment accelerated the leaf abscission of Chinese cabbage, in which the expression of BcEIL1/2/3 was significantly induced (Meng et al, 2019). After knocking down the expression of LeEILs, the flower abscission was obviously reduced in tomatoes (Tieman et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

The LcKNAT1-LcEIL2/3 Regulatory Module Is Involved in Fruitlet Abscission in Litchi

Ying

et al. 2022

Front. Plant Sci.

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Large and premature organ abscission may limit the industrial development of fruit crops by causing serious economic losses. It is well accepted that ethylene (ET) is a strong inducer of organ abscission in plants. However, the mechanisms underlying the control of organ abscission by ET are largely unknown. We previously revealed that LcKNAT1, a KNOTTED-LIKE FROM ARABIDOPSIS THALIANA1 (KNAT1)-like protein, acted as a negative regulator in control of fruitlet abscission through suppressing the expression of ET biosynthetic genes in litchi. In this study, we further reported that LcKNAT1 could also directly repress the transcription of LcEIL2 and LcEIL3, two ETHYLENE INSENSITIVE 3-like (EIL) homologs in litchi, which functioned as positive regulators in ET-activated fruitlet abscission by directly promoting the expression of genes responsible for ET biosynthesis and cell wall degradation. The expression level of LcKNAT1 was downregulated, while LcEIL2/3 was upregulated at the abscission zone (AZ) accompanying the fruitlet abscission in litchi. The results of electrophoretic mobility shift assays (EMSAs) and transient expression showed that LcKNAT1 could directly bind to the promoters of LcEIL2 and LcEIL3 and repress their expression. Furthermore, the genetic cross demonstrated that the β-glucuronidase (GUS) expression driven by the promoters of LcEIL2 or LcEIL3 at the floral AZ was obviously suppressed by LcKNAT1 under stable transformation in Arabidopsis. Taken together, our findings suggest that the LcKNAT1-LcEIL2/3 regulatory module is likely involved in the fruitlet abscission in litchi, and we propose that LcKNAT1 could suppress both ET biosynthesis and signaling to regulate litchi fruit abscission.

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“…According to their function, different hormones may be split into two categories: one promotes aging, shedding and inhibit growth, while the other inhibits aging and promotes growth. According to prior study, ET can accelerate abscission formation and enhance organ shedding ( Bunya-atichart et al, 2011 ; Meng et al, 2019 ). In apple, the increase of MdACO1 (constructional triple reaction 1) was detected in fruit separations ( Botton et al, 2011 ).…”

Section: Discussionmentioning

confidence: 98%

A multifaceted comparison between the fruit-abscission and fruit-retention cultivars in ornamental crabapple

Wang

Yan

et al. 2022

Front. Plant Sci.

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The ornamental crabapple is a multipurpose landscaping tree that bears brilliant fruit throughout the winter. However, whether or not its fruit persists after maturation is specifically correlated to cultivar characteristics. In this work, we screened two different types that display fruit-retention (“Donald Wyman,” “Red Jewel,” and “Sugar Tyme”) and fruit-abscission (“Radiant” and “Flame”) in Northern China across the whole winter using multi-year successional records. Fruit-abscission was determined predominantly by the abscission zone established at the base of the pedicel, regardless of fruit size and pedicel length, according to the results of the comparative research. The primary physiological rationale was the accumulation of hydrolases activity (pectinesterase, cellulase, polygalacturonase, and β-glucosidase). Comparative transcriptomics further identified a number of upregulated DEGs involved in the synthesis pathways of canonical phytohormones, such as ethylene, jasmonic acid, abscisic acid, and cytokinin, as well as 12 transcription factors linked in downstream signaling in fruit-abscission cultivars. Finally, a model incorporating multi-layered modulation was proposed for the fruit abscission of ornamental crabapple. This study will serve as the foundation for the development of fruit-viewing crabapples that have an extended ornamental lifetime.

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Ethylene and 1-MCP treatments affect leaf abscission and associated metabolism of Chinese cabbage

Cited by 17 publications

References 53 publications

LcEIL2/3 are involved in fruitlet abscission via activating genes related to ethylene biosynthesis and cell wall remodeling in litchi

LcEIL2/3 are involved in fruitlet abscission via activating genes related to ethylene biosynthesis and cell wall remodeling in litchi

The LcKNAT1-LcEIL2/3 Regulatory Module Is Involved in Fruitlet Abscission in Litchi

A multifaceted comparison between the fruit-abscission and fruit-retention cultivars in ornamental crabapple

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