J Integr Plant Biol

Arabidopsis Forkhead-Associated Domain Protein 3 negatively regulates peroxisome division

Mintu Desai, Ronghui Pan, and Jianping Hu

2017, 59(7): 454-458. doi:10.1111/jipb.12542

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Peroxisomes are essential and dynamic organelles capable of changing abundance through division and proliferation in response to environmental and developmental cues. This work identified an Arabidopsis transcription factor Forkhead-Associated Domain Protein 3 (FHA3), which negatively regulates peroxisome division by repressing the expression of the peroxisome division factor gene PEX11b.

Poly(ADP-ribose) polymerases regulate cell division and development in Arabidopsis roots

Caifeng Liu, Qiao Wu, Weiwei Liu, Zongyin Gu, Wenjing Wang, Ping Xu, Hong Ma, and Xiaochun Ge

2017, 59(7): 459-474. doi:10.1111/jipb.12530

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Understanding the molecular mechanisms regulating root architecture establishment is very important for agriculture. In this study, we present the evidence that poly (ADP-ribose) polymerases play an important role in regulating root cell division and inhibition of their activities promotes lateral root development.

Phenolic metabolism and molecular mass distribution of polysaccharides in cellulose-deficient maize cells

María de Castro, Romina Martínez-Rubio, José L. Acebes, Antonio Encina, Stephen C. Fry, and Penélope García-Angulo

2017, 59(7): 475-495. doi:10.1111/jipb.12549

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In this study, a novel strategy adopted for coping with reduced cellulose levels is provided. Maize cells with reduced cellulose contents synthesize shorter, albeit extensively cross-linked hemicelluloses as part of their coping strategy. This work contributes to enhancing our understanding of hemicellulose metabolism, providing new mechanisms for cell wall plasticity.

A zinc finger protein, interacted with cyclophilin, affects root development via IAA pathway in rice

Peng Cui, Hongbo Liu, Songlin Ruan, Basharat Ali, Rafaqat Ali Gill, Huasheng Ma, Zhifu Zheng, and Weijun Zhou

2017, 59(7): 496-505. doi:10.1111/jipb.12531

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To better understand the molecular mechanisms underlying lateral root formation, an auxin-responsive gene, OsZFP (Os01g0252900), was characterized from rice. OsZFP encodes a C2HC-type zinc finger protein, which locates in nucleus, and interacts with cyclophilin. OsZFP-RNAi lines exhibited distinctive defects in lateral root development through IAA pathway.

Unfolded protein response activation compensates endoplasmic reticulum-associated degradation deficiency in Arabidopsis

Qingliang Li, Hai Wei, Lijing Liu, Xiaoyuan Yang, Xiansheng Zhang, and Qi Xie

2017, 59(7): 506-521. doi:10.1111/jipb.12544

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UPR and ERAD are two related systems for eliminating misfolded proteins caused by stresses. In this study, the bZIP proteins involved in the UPR machinery were found specifically regulated ER chaperone and HRD1 complex components, suggesting that bZIPs could compensate for ERAD deficiency under abiotic stresses.

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