J Integr Plant Biol

Multi-scale modeling of Arabidopsis thaliana response to different CO₂ conditions: From gene expression to metabolic flux

Lin Liu, Fangzhou Shen, Changpeng Xin, and Zhuo Wang

2016, 58(1): 2-11. doi:10.1111/jipb.12370

摘要 ( 2974 )

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Studies on plant response to different CO₂ conditions in the levels of both gene transcript and metabolic activity are still very limited so far. Here, by integrating metabolic model with transcriptome data, we construct specific models for Arabidopsis under elevated and low CO2, which uncovered differences in active reactions, increased/decreased fluxes, and post-transcriptional regulation.

Single base substitution in OsCDC48 is responsible for premature senescence and death phenotype in rice

Qi-Na Huang, Yong-Feng Shi, Xiao-Bo Zhang, Li-Xin Song, Bao-Hua Feng, Hui-Mei Wang, Xia Xu, Xiao-Hong Li, Dan Guo, and Jian-Li Wu

2016, 58(1): 12-28. doi:10.1111/jipb.12372

摘要 ( 3868 )

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Plant senescence and death can be caused by various factors. One of them is an enzyme termed AAA-ATPase showing multiple biological functions and mainly servicing as the energy provider. OsCDC48 is the corresponding enzyme in rice and its defect cause early senescence and death in rice.

Decreased glutathione reductase2 leads to early leaf senescence in Arabidopsis

Shunhua Ding, Liang Wang, Zhipan Yang, Qingtao Lu, Xiaogang Wen, and Congming Lu

2016, 58(1): 29-47. doi:10.1111/jipb.12371

摘要 ( 2491 )

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Glutathione reductase (GR) functions in the ascorbate-glutathione cycle, which scavenges H₂O₂. Here, we report that GR2 regulates leaf senescence by modulating H₂O₂ and glutathione signaling in Arabidopsis.

Gene expression and physiological responses to salinity and water stress of contrasting durum wheat genotypes

Salima Yousfi, Antonio J. Márquez, Marco Betti, José Luis Araus, and Maria Dolores Serret

2016, 58(1): 48-66. doi:10.1111/jipb.12359

摘要 ( 2540 )

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Durum wheat is a major crop in Mediterranean arid environments, where salinity driven by irrigation is an increasing problem, and breeding is a way for mitigation. Our study shows that genotypes more resilient to salinity exhibit increased expression of key genes involved in the photosynthetic metabolism of carbon and nitrogen.

Arabidopsis C3HC4-RING finger E3 ubiquitin ligase AtAIRP4 positively regulates stress-responsive abscisic acid signaling

Liang Yang, Qiaohong Liu, Zhibin Liu, Hao Yang, Jianmei Wang, Xufeng Li, and Yi Yang

2016, 58(1): 67-80. doi:10.1111/jipb.12364

摘要 ( 2809 )

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Protein degradation mediated by ubiquitin plays a primary role in plant stress signaling transduction. E3 ligases recognize the acceptor protein and play a pivotal role in ubiquitination. Here, we identified that AtAIRP4, a C3HC4-RING finger E3 ligase, is a positive regulator of ABA-mediated drought and salt tolerance in Arabidopsis.

Identification and fine mapping of quantitative trait loci for the number of vascular bundle in maize stem

Cheng Huang, Qiuyue Chen, Guanghui Xu, Dingyi Xu, Jinge Tian and Feng Tian

2016, 58(1): 81-90. doi:10.1111/jipb.12358

摘要 ( 2563 )

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Vascular bundle is the plant transport system that links source and sink, and acts as an important factor for yield potential realization. We report a high-resolution QTL mapping for vascular bundle number in maize stem using a large maize-teosinte population, and show that vascular bundle number is dominated by a large number of small-effect QTLs.

A pair of light signaling factors FHY3 and FAR1 regulates plant immunity by modulating chlorophyll biosynthesis

Wanqing Wang, Weijiang Tang, Tingting Ma, De Niu, Jing Bo Jin, Haiyang Wang, and Rongcheng Lin

2016, 58(1): 91-103. doi:10.1111/jipb.12369

摘要 ( 2637 )

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This study reveals that two light signaling transcription factors modulate plant immune response through regulating chlorophyll biosynthesis and the salicylic acid biosynthetic and signaling pathways.

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