Effect of hormone-induced SlMYB102 transcription factor on physiological characteristics of tomato at low temperature stress

doi:10.14088/j.cnki.issn0439-8114.2021.15.028

Abstract

Abstract: To investigate the effects of six exogenous hormones on the expression of tomato transcription factor SlMYB102 gene under low temperature stress. Exogenous hormone spraying and low temperature treatment were applied to tomato seedlings with four leaves and one heart. In hormone treatment, salicylic acid （SA）, augrin （IAA）, gibberellin （GA₃）, 6-benzylamine （6-BA）, abscisic acid （ABA） and methyl jasmonate （MeJA） were sprayed on the leaves. Distilled water was sprayed as a control. Sampling at 0, 1, 3, 6, 9, 12 and 24 h after low temperature treatment at 4 ℃. The expression of tomato transcription factor SlMYB102 gene was detected by real-time fluorescence quantitative PCR. The results show that induced by ABA,GA3,IAA,SA,6-BA and MeJA, SlMYB102 gene responded to all six hormones and presented an up-regulated expression pattern. As a member of the R2R3-MYB subfamily of MYB family, SlMYB102 transcription factor may be involved in the regulatory network of these hormones in response to stress.

Key words: tomato, low temperature stress, transcription factor, qRT-PCR

CLC Number:

S641.2

LI Meng-dan, WANG Mei-ling, GUO Yang-dong, ZHANG Xi-chun. Effect of hormone-induced SlMYB102 transcription factor on physiological characteristics of tomato at low temperature stress[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(15): 136-140.

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