Quality and PR gene expression of table grapes treated with ozone and sulfur dioxide to control fungal decay

2015 ◽  
Vol 96 (6) ◽  
pp. 2018-2024 ◽  
Author(s):  
Arturo Duarte-Sierra ◽  
Emmanuel Aispuro-Hernández ◽  
Irasema Vargas-Arispuro ◽  
María A Islas-Osuna ◽  
Gustavo A González-Aguilar ◽  
...  
2021 ◽  
pp. 108201322110206
Author(s):  
TK Hazarika ◽  
Tangkasil Marak

Postharvest life of table grapes is usually shortened by berry softening, berry drop, stem browning, fungal decay. Salicylic acid reduces fruit respiration and ethylene biosynthesis, during storage of fruits. Similarly, application of oxalic acid is a secure and hopeful postharvest handling technology for keeping quality and prolonging storage life of fruit. To study the effect of Salicylic acid and oxalic acid in enhancing the quality and extending the shelf life of grape, the present investigation was conducted. The grape berries were treated with Oxalic acid (OA) (1, 2, 3, 4, and 5 mM) and Salicylic acid (SA) (0.5, 1, 1.5 and 2 mM). The treatments were compared within 16th days at an interval of 4 days. Among the treatments, SA (2 mM) showed superiority in different quality attributing characters like physiological loss in weight (PLW), berry firmness, rachis browning, berry appearance, fungal decay, berry shattering, TSS, ascorbic acid, titratable acidity, total sugars, reducing sugars, TSS: acid ratio, taste, overall acceptability and shelf life. Hence, SA (2 mM) can be used as an effective strategy for maintaining quality of table grapes.


2016 ◽  
Vol 41 (4) ◽  
pp. e13058
Author(s):  
Xiaoyu Chen ◽  
Zhiqiang Zhu ◽  
Xiaoshuan Zhang ◽  
Arina Oana Antoce ◽  
Weisong Mu

Biorheology ◽  
1990 ◽  
Vol 27 (3-4) ◽  
pp. 485-489 ◽  
Author(s):  
Carol Basbaum ◽  
Marianne Gallup ◽  
James Gum ◽  
Young Kim ◽  
Berthold Jany

Agronomy ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 2 ◽  
Author(s):  
Nur Akbar Arofatullah ◽  
Morifumi Hasegawa ◽  
Sayuri Tanabata ◽  
Isao Ogiwara ◽  
Tatsuo Sato

*Abstract: We investigated the role of heat shock transcription factors (Hsfs) during induction of defense response by heat-shock treatment (HST) in tomato. Leaf disease symptoms were significantly reduced at 12 and 24 h after HST, consistent with upregulation of pathogenesis-related (PR) genes PR1a2 and PR1b1 peaking at 24 h after treatment. These genes were upregulated at the treatment application site, but not in untreated leaves. In contrast to HST, inoculation of the first leaf induced systemic upregulation of acidic PR genes in uninoculated second leaves. Furthermore, heat shock element motifs were found in upstream regions of PR1a2, PR1b1, Chitinase 3, Chitinase 9, Glucanase A, and Glucanase B genes. Upregulation of HsfA2 and HsfB1 peaked at 6 h after HST, 6 h earlier than salicylic acid accumulation. Foliar spray of heat shock protein 90 (Hsp90) inhibitor geldanamycin (GDA) induced PR gene expression comparable to that after HST. PR gene expression and defense response against Pseudomonas syringae pv. tomato (Pst) decreased when combining HST with Hsfs inhibitor KRIBB11. The Hsfs and PR gene expression induced by heat or GDA, together with the suppression of heat shock-induced resistance (HSIR) against Pst by KRIBB11, suggested a direct contribution of Hsfs to HSIR regulation in tomato.


1998 ◽  
Vol 10 (4) ◽  
pp. 557 ◽  
Author(s):  
Joseph D. Clarke ◽  
Yidong Liu ◽  
Daniel F. Klessig ◽  
Xinnian Dong

2012 ◽  
Vol 200 ◽  
pp. 305-311
Author(s):  
Dong Li Li ◽  
Wen Cai Xu ◽  
Zun Zhong Liu ◽  
Ya Bo Fu ◽  
Ya Jun Wang

An active packaging film (APF1) with releasing low concentration sulfur dioxide (SO2) was tested on quality of ‘vitis labruscana kyoho’ table grape. All samples were stored at 5°C and during the storage period the main quality parameters, weight loss, berries shatter, decay, firmness, total soluble solids content (TSS), total acid (TA, using the PH of grape juice instead of the TA ), Vitamin c (Vc) content were monitored and compared with the control sample unpacked in any film. Results demonstrated that APF1 could reduce water loss of table grapes, prevent it from pathogens infection. The results also showed that APF1 could greatly guarantee a long shelf life for grape. After storage 56 days (storage at 0~5°C), the water loss, berry firmness, TA and Vc content in grapes packaged in APF1 were slowly reduced, TSS was slight increased, percentage of shatter and decayed berries of grapes were 22% and 27%, respectively. The percentage of berries decay of grapes packaged in APF1 was reduced to 5% from 21% for control batches on 11th days. All unpackaged table grapes (control batches) were decayed after 28 days. APF1 would help to preserve quality and extend shelf life of table grapes.


2007 ◽  
Vol 2 (4) ◽  
pp. 369-378 ◽  
Author(s):  
Ziqiang Meng ◽  
Guohua Qin ◽  
Juli Bai ◽  
Jianbiao Zhang ◽  
Xin Zhang ◽  
...  

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