Analysis of tannins in seeds and skins of Shiraz grapes throughout berry development

Ethylene is important during the berry development and in the last stages of rachis development or rachis senescence. Since grapes develop in a cluster that comprises both the fruit berry and the nonfruit rachis, we measured the release of ethylene from both tissues. Detached berries from Vitis vinifera ‘Ruby Seedless’ and ‘Thompson Seedless’ showed that ethylene release peaks at the beginning of berry development and at veraison. Ethylene production in the rachis was higher than that in the berry and had an obvious peak before harvest in ‘Thompson Seedless’. In both cultivars, ethephon treatment induced ethylene production in the rachis but not in the berry. Expression of 1-aminocyclopropane-1-carboxylate (ACC) synthase (ACS) and ACC oxidase (ACO) genes showed diverse temporal and spatial patterns in ‘Thompson Seedless’ and ‘Ruby Seedless’. For most gene family members, the low ACS expression levels were observed in berry and rachis. Expression levels of most of the ACS and ACO genes did not correlate with ethylene released in the same organ. The transcriptional level of VvACS1 did correlate with ethylene evolution in rachis of ‘Thompson Seedless’ during berry development and storage, which suggested that VvACS1 may have important roles in rachis senescence. In berries of ‘Thompson Seedless’ and ‘Ruby Seedless’, the transcriptional levels of VvACO1, VvACS2, and VvACS6 coincided with ethylene production, indicating possible roles in berry development. Expression of VvACS2–VvACO9 and VvACO1–VvACO3 was not consistent with ethylene production during storage or in response to ethephon treatment, which suggests that the expression of ACS and ACO was affected by other stress factors after harvest.

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Transcriptomic Analyses of Root Restriction Effects on Phytohormone Content and Signal Transduction during Grape Berry Development and Ripening

International Journal of Molecular Sciences ◽

10.3390/ijms19082300 ◽

2018 ◽

Vol 19 (8) ◽

pp. 2300 ◽

Cited By ~ 1

Author(s):

Feng Leng ◽

Jinping Cao ◽

Shiping Wang ◽

Ling Jiang ◽

Xian Li ◽

...

Keyword(s):

Signal Transduction ◽

High Resolution Mass Spectrometry ◽

Transcript Abundance ◽

Ultra Performance Liquid Chromatography ◽

Grape Berry ◽

Enzyme Linked Immunosorbent Assay ◽

Signal Transduction Pathways ◽

Berry Development ◽

Seedless Grape ◽

Root Restriction

Phytohormones strongly influence growth, development and nutritional quality of agricultural products by modulating molecular and biochemical changes. The purpose of the present study was to investigate the influence of root restriction (RR) treatment on the dynamic changes of main phytohormones during the berry development and ripening of “Summer Black” early ripening seedless grape (Vitis vinifera × V. labrusca), and to analyze the changes in the biosynthesis and signal transduction pathways of phytohormones by transcriptomics. Enzyme-linked immunosorbent assay (ELISA) and Ultra Performance Liquid Chromatography-High Resolution Mass Spectrometry (UPLC-HRMS) were used to quantify the phytohormone levels, and RNA-Seq was used to analyze the transcript abundance. The results showed that 23 transcripts involved in the phytohormone biosynthesis and 34 transcripts involved in the signal transduction pathways were significantly changed by RR treatment. RR also increased abscisic acid, brassinosteroid, ethylene, jasmonic acid and salicylic acid levels, while decreasing auxin, cytokinin, and gibberellin contents. The results of the present study suggest that RR treatment can accelerate the grape ripening process, and specific candidate genes were identified for further functional analysis.

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Versatile physiological functions of the Nudix Hydrolase family in berry development and stress response in grapevine

10.21203/rs.2.22110/v1 ◽

2020 ◽

Author(s):

Zhaoke Wang ◽

Peipei Wang ◽

Le Guan ◽

Muhammad Salman Haider ◽

Maazullah Nasim ◽

...

Keyword(s):

Stress Response ◽

Expression Patterns ◽

Leaf Roll ◽

Pcr Analysis ◽

Berry Development ◽

Abiotic And Biotic Stresses ◽

Physiological Functions ◽

Biotic Stresses ◽

Wide Range ◽

Nudix Hydrolases

Abstract Background Nudix hydrolases are widely distributed across all classes of organisms and provide the potential capacity to hydrolyze a wide range of organic pyrophosphates. Although Nudix hydrolases are involved in plants detoxification processes in response to abiotic and biotic stresses, the biological functions of Nudix hydrolases remain largely unclear in grapevine. Results A total of 25 putative grapevine Nudix hydrolases ( VvNUDXs ) were identified by bioinformatics analysis and classified into eight subfamilies based to their preferred substrates. Both tandem and segmental duplications were responsible for the evolution and expansion of NUDX gene family in grapevine. To investigate into their regulatory roles of VvNUDX genes during growth and development as well as in response to abiotic and biotic stress in grapevine, the expression patterns were revealed in publicly available microarray data. The spatial and temporal expression patterns of VvNUDX genes indicated that these genes might play important roles in multiple developmental processes. Transcriptome and qRT-PCR analysis exhibited that ten VvNUDX genes were specifically expressed in grapevine berries, suggesting the potential roles in grapevine berry development. Expression and phylogenetic analysis demonstrated that VvNUDX1 and VvNUDX3 might be involved in terpenoid biosynthesis in grapevine. Futhermore, most VvNUDX genes toward the ADP-ribose/NADH were different patterns in response to various abiotic and biotic stresses, such as salinity and drought, as well as different types of biotic treatments, such as Erysiphe necator , Bois Noir phytoplasma and leaf-roll-associated virus-3 (GLRaV-3). Conclusions These results showed that VvNUDX were associated with plant detoxification processes in response to abiotic and biotic stresses, and regulate disease immunity and resistance pathways. The present informations may provide good opportunities to explore the physiological functions of VvNUDX genes in berry development and stress response networks in grapevine.

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