SlMYC2 Involved in Methyl Jasmonate-Induced Tomato Fruit Chilling Tolerance

The physiological role of arginase in nitrogen remobilization processes from protein degradation during seed germination has well been described in several species. However, very little is known about its possible roles in plant stress responses. Treatment of tomato fruit (Solanum lycopersicum L.) with 0.05 mm methyl jasmonate (MeJA) enhanced transcription levels of arginase genes, especially LeARG2. Chilling injury (CI) of fruit treated with 0.05 mm MeJA for 12 hours was also effectively alleviated, as manifested by decreases in CI index, electrolyte leakage, and malondialdehyde (MDA) content. To investigate the potential role of arginase in MeJA-induced chilling tolerance, fruit were treated with MeJA or the arginase inhibitor Nω-hydroxy-nor-l-arginine (nor-NOHA) combined with MeJA and then stored at 2 °C for 28 days. MeJA-induced arginase activity was strongly inhibited and the reduction of CI by MeJA was nearly abolished by the inhibitor. In addition, MeJA treatment increased the activities of superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX); inhibited peroxidase (POD) activities; and promoted proline and polyamines accumulation. These effects were partially counteracted by nor-NOHA; putrescine accumulation, however, was unaffected by the inhibitor. Our results indicate that arginase may be involved in MeJA-induced chilling tolerance, possibly by ameliorating the antioxidant enzyme system of fruit and increasing proline levels.

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Methyl jasmonate alters arginine catabolism and improves postharvest chilling tolerance in cherry tomato fruit

Postharvest Biology and Technology ◽

10.1016/j.postharvbio.2011.07.006 ◽

2012 ◽

Vol 64 (1) ◽

pp. 160-167 ◽

Cited By ~ 50

Author(s):

Xinhua Zhang ◽

Jiping Sheng ◽

Fujun Li ◽

Demei Meng ◽

Lin Shen

Keyword(s):

Methyl Jasmonate ◽

Tomato Fruit ◽

Chilling Tolerance ◽

Cherry Tomato ◽

Arginine Catabolism

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SlMYC2 targeted regulation of polyamines biosynthesis contributes to methyl jasmonate-induced chilling tolerance in tomato fruit

Postharvest Biology and Technology ◽

10.1016/j.postharvbio.2020.111443 ◽

2021 ◽

Vol 174 ◽

pp. 111443

Author(s):

Dedong Min ◽

Jingxiang Zhou ◽

Jiaozhuo Li ◽

Wen Ai ◽

Zilong Li ◽

...

Keyword(s):

Methyl Jasmonate ◽

Tomato Fruit ◽

Chilling Tolerance

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Physiological and biochemical changes related to methyl jasmonate-induced chilling tolerance of rice (Oryza sativa L.) seedlings

Plant Cell & Environment ◽

10.1111/j.1365-3040.1996.tb00227.x ◽

1996 ◽

Vol 19 (1) ◽

pp. 65-74 ◽

Cited By ~ 43

Author(s):

T.-M. LEE ◽

H.-S. LUR ◽

Y.-H. LIN ◽

C. CHU

Keyword(s):

Oryza Sativa ◽

Methyl Jasmonate ◽

Oryza Sativa L ◽

Chilling Tolerance ◽

Biochemical Changes ◽

Physiological And Biochemical

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Effects of Watertable and Fertilizer Management on Susceptibility of Tomato Fruit to Chilling Injury

Journal of the American Society for Horticultural Science ◽

10.21273/jashs.121.3.525 ◽

1996 ◽

Vol 121 (3) ◽

pp. 525-530

Author(s):

Georges T. Dodds ◽

Leif Trenholm ◽

Chandra A. Madramootoo

Keyword(s):

Color Change ◽

Tomato Fruit ◽

Chilling Injury ◽

Soil Surface ◽

Chilling Tolerance ◽

Fertilizer Management ◽

Lesion Area ◽

New Yorker ◽

Consistent Manner ◽

Calcium Fertilization

In a 2-year study (1993-1994), `New Yorker' tomato (Lycopersicon esculentum Mill.) plants grown in field lysimeters were subjected to four watertable depth (WTD) treatments (0.3, 0.6, 0.8, and 1.0 m from the soil surface) factorially combined with 5 potassium/calcium fertilization combinations. Mature-green fruit from four replicates of each treatment were stored at 5C for 21 days, and fruit color was monitored with a tristimulus colorimeter. Fruit were subsequently allowed to ripen at 20C for 10 days, at which time chilling injury was assessed on the basis of delayed ripening and area of lesions. Potassium and calcium applied in the field had no effect on chilling tolerance of the fruit. In the drier year (1993), shallower WTD treatments generally yielded fruit that changed color less during chilling and were more chilling-sensitive based on delayed ripening. In the wetter year, differences in color change and chilling tolerance between WTD, if any, were small. Over both years, lesion area varied with WTD, but not in a consistent manner. Based on these results, we suggest that differences in water availability should be considered when studying tomato fruit chilling.

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