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Volume 13
Issue 6
10.3390/agronomy13061533
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Article

Over-Expression of Soybean GmSAUL1 Enhances Disease Resistance in Nicotiana tabacum

by
Jun-Mei Li
1,
Mei-Yan Ye
1,
Xiao-Han Ma
1,
Ni-Ni Wu
1 and
Jian-Zhong Liu
1,2,*
1
Institute of Plant Genetics and Developmental Biology, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
2
Zhejiang Provincial Key Laboratory of Biotechnology on Specialty Economic Plants, Zhejiang Normal University, Jinhua 321004, China
*
Author to whom correspondence should be addressed.
Agronomy 2023, 13(6), 1533; https://doi.org/10.3390/agronomy13061533
Submission received: 22 February 2023 / Revised: 16 May 2023 / Accepted: 28 May 2023 / Published: 31 May 2023
(This article belongs to the Special Issue Advances in Molecular Technologies on Plant Disease Management)
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Abstract

E3 ubiquitin ligases play essential roles in plant defense responses. However, their roles in other plant species have not been investigated extensively. Here, we used a gain-of-function approach to interrogate the function of GmSAUL1 (Senescence-Associated E3 Ubiquitin Ligase 1) homologs in soybeans. Ectopic over-expression of GmSAUL1a in Nicotiana tabacum resulted in autoimmune responses that could be suppressed by high temperature, which is a hallmark of NLR (nucleotide-binding leucine-rich repeat protein)-mediated resistance. Interestingly, an elevated activation of NtMPK6, but reduced activation of NtMPK4, responding to flg22 treatment, was observed in these GmSAUL1a-over-expressing tobacco lines, suggesting that over-expressing GmSAUL1a activates immune signaling through activating NtMPK6, but suppressing NtMPK4 kinase activity. Collectively, these results demonstrated that GmSAUL1 plays a positive and pivotal role in soybean immunity that is likely governed by NLR proteins.
Keywords: E3 ligase; Glycine max; cell death; immune responses; MAPK E3 ligase; Glycine max; cell death; immune responses; MAPK

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MDPI and ACS Style

Li, J.-M.; Ye, M.-Y.; Ma, X.-H.; Wu, N.-N.; Liu, J.-Z. Over-Expression of Soybean GmSAUL1 Enhances Disease Resistance in Nicotiana tabacum. Agronomy 2023, 13, 1533. https://doi.org/10.3390/agronomy13061533

AMA Style

Li J-M, Ye M-Y, Ma X-H, Wu N-N, Liu J-Z. Over-Expression of Soybean GmSAUL1 Enhances Disease Resistance in Nicotiana tabacum. Agronomy. 2023; 13(6):1533. https://doi.org/10.3390/agronomy13061533

Chicago/Turabian Style

Li, Jun-Mei, Mei-Yan Ye, Xiao-Han Ma, Ni-Ni Wu, and Jian-Zhong Liu. 2023. "Over-Expression of Soybean GmSAUL1 Enhances Disease Resistance in Nicotiana tabacum" Agronomy 13, no. 6: 1533. https://doi.org/10.3390/agronomy13061533

APA Style

Li, J.-M., Ye, M.-Y., Ma, X.-H., Wu, N.-N., & Liu, J.-Z. (2023). Over-Expression of Soybean GmSAUL1 Enhances Disease Resistance in Nicotiana tabacum. Agronomy, 13(6), 1533. https://doi.org/10.3390/agronomy13061533

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