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Volume 8
Issue 10
10.3390/plants8100415
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Article

Characterization and Mapping of a Novel Premature Leaf Senescence Mutant in Common Tobacco (Nicotiana tabacum L.)

by
Xiaoming Gao
1,2,†,
Xinru Wu
1,†,
Guanshan Liu
1,
Zenglin Zhang
1,
Jiangtao Chao
1,
Zhiyuan Li
1,
Yongfeng Guo
1,* and
Yuhe Sun
1,*
1
Tobacco Research Institute, Chinese Academy of Agricultural Sciences, Qingdao 266101, China
2
Plant Genetic, Gembloux Agro-Bio Tech, University of Liege, Gembloux B-5030, Belgium
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Plants 2019, 8(10), 415; https://doi.org/10.3390/plants8100415
Received: 24 September 2019 / Revised: 12 October 2019 / Accepted: 12 October 2019 / Published: 15 October 2019
(This article belongs to the Special Issue Genomics for Plant Breeding)
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Abstract

As the last stage of plant development, leaf senescence has a great impact on plant’s life cycle. Genetic manipulation of leaf senescence has been used as an efficient approach in improving the yield and quality of crop plants. Here we describe an ethyl methane sulfonate (EMS) mutagenesis induced premature leaf senescence mutant yellow leaf 1 (yl1) in common tobacco (Nicotiana tabacum L.). The yl1 plants displayed early leaf yellowing. Physiological parameters and marker genes expression indicated that the yl1 phenotype was caused by premature leaf senescence. Genetic analyses indicated that the yl1 phenotype was controlled by a single recessive gene that was subsequently mapped to a specific interval of tobacco linkage group 11 using simple sequence repeat (SSR) markers. Exogenous plant hormone treatments of leaves showed that the yl1 mutant was more sensitive to ethylene and jasmonic acid than the wild type. No similar tobacco premature leaf senescence mutants have been reported. This study laid a foundation for finding the gene controlling the mutation phenotype and revealing the molecular regulation mechanism of tobacco leaf senescence in the next stage. View Full-Text
Keywords: tobacco; EMS mutagenesis; premature leaf senescence; SSR markers; plant hormone tobacco; EMS mutagenesis; premature leaf senescence; SSR markers; plant hormone
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MDPI and ACS Style

Gao, X.; Wu, X.; Liu, G.; Zhang, Z.; Chao, J.; Li, Z.; Guo, Y.; Sun, Y. Characterization and Mapping of a Novel Premature Leaf Senescence Mutant in Common Tobacco (Nicotiana tabacum L.). Plants 2019, 8, 415. https://doi.org/10.3390/plants8100415

AMA Style

Gao X, Wu X, Liu G, Zhang Z, Chao J, Li Z, Guo Y, Sun Y. Characterization and Mapping of a Novel Premature Leaf Senescence Mutant in Common Tobacco (Nicotiana tabacum L.). Plants. 2019; 8(10):415. https://doi.org/10.3390/plants8100415

Chicago/Turabian Style

Gao, Xiaoming, Xinru Wu, Guanshan Liu, Zenglin Zhang, Jiangtao Chao, Zhiyuan Li, Yongfeng Guo, and Yuhe Sun. 2019. "Characterization and Mapping of a Novel Premature Leaf Senescence Mutant in Common Tobacco (Nicotiana tabacum L.)" Plants 8, no. 10: 415. https://doi.org/10.3390/plants8100415

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