Article
Plant Sciences
Mark K. Jenness, Reuben Tayengwa, Gabrielle A. Bate, Wiebke Tapken, Yuqin Zhang, Changxu Pang, Angus S. Murphy
Summary: FK506-binding protein 42/Twisted dwarf 1 directly regulates multiple ATP-binding cassette (ABC) transporters. Loss of function of ABCB6 and ABCB20 contributes to the additional phenotypes observed in TWD1 mutants compared to abcb1 abcb19 mutants. Other ABCB transporters participate in localized auxin streams or alternate transport substrates.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Ying Yang, Qiaoyu Huang, Xiaofei Wang, Jiaqi Mei, Anket Sharma, Durgesh Kumar Tripathi, Huwei Yuan, Bingsong Zheng
Summary: This study identified and characterized 23 ABCB genes (CcABCBs) in Chinese hickory. The expression profiles of auxin-related ABCBs were determined among tissues, under auxin-related phytohormone treatments, and during grafting. Many phytohormone-related cis-acting regulatory elements were detected on the promoters of CcABCB genes.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Review
Agronomy
Yaning Feng, Enhe Bayaer, Yanhua Qi
Summary: This article summarizes the importance of auxin in plant growth and development, as well as its long-distance and short-distance transport pathways within the plant. The establishment and maintenance of auxin concentration gradient through polar transport are critical for regulating plant growth and development, as well as responding to environmental changes.
Article
Biochemistry & Molecular Biology
Jian Chen, Yangjie Hu, Pengchao Hao, Tashi Tsering, Jian Xia, Yuqin Zhang, Ohad Roth, Maria F. Njo, Lieven Sterck, Yun Hu, Yunde Zhao, Danny Geelen, Markus Geisler, Eilon Shani, Tom Beeckman, Steffen Vanneste
Summary: Based on the research, the positioning of the lateral root (LR) is influenced by an internal spacing mechanism controlled by auxin oscillations known as the root clock. Surprisingly, none of the previously identified PIN and ABCB auxin transporters are involved in this LR prepatterning mechanism. However, the novel auxin-transporting ABCBs, ABCB15-22, were found to contribute to shootward auxin transport in the lateral root cap (LRC) and epidermis, thereby explaining the reduced auxin oscillation that correlates with strongly reduced LR densities. These findings suggest that LRC-derived auxin contributes to the amplitude of the root clock.
Article
Plant Sciences
Hao Zhang, Zhenjia Yu, Xiaodie Yao, Jingli Chen, Xing Chen, Huiwen Zhou, Yuxia Lou, Feng Ming, Yue Jin
Summary: The evolutionary analysis of the SAUR gene family from bryophytes to angiosperms, particularly in Fabaceae plants, shows a large expansion and specific distribution in different plant species. The conserved motifs and protein structures of SAUR proteins indicate their critical role in plant stability and function. Expression analysis of SAUR genes and functional similarity within the same clade highlight the importance of studying gene functions at a clade level.
Article
Biochemistry & Molecular Biology
William D. Teale, Taras Pasternak, Cristina Dal Bosco, Alexander Dovzhenko, Krystyna Kratzat, Wolfgang Bildl, Manuel Schwoerer, Thorsten Falk, Benadetto Ruperti, Jonas Schaefer, Mojgan Shahriari, Lena Pilgermayer, Xugang Li, Florian Luebben, Andreas Plueckthun, Uwe Schulte, Klaus Palme
Summary: The composition and regulation of the PIN protein complex involved in auxin transport were investigated using blue-native PAGE and quantitative mass spectrometry. It was found that endogenous flavonols stabilize PIN dimers to regulate auxin efflux. This mechanism can be countered by auxin transport inhibitors and specific amino acids.
Article
Genetics & Heredity
An-Pei Zhou, Yuan-Yuan Zhong, Si-Qi Li, Xuan Fei, Pei-Hua Gan, Dan Zong, Cheng-Zhong He
Summary: The polar auxin transport system plays a crucial role in the response to inversion in Populus species, with different expression patterns among the PIN, AUX/LAX and ABCB gene families in different species.
Article
Biology
Chenghui Yang, Dongdong Wang, Chao Zhang, Minghui Ye, Nana Kong, Haoli Ma, Qin Chen
Summary: This study provides comprehensive information on auxin transporter gene families in potato, including their basic parameters, expression patterns, tissue-specificity, subcellular localizations, and transcriptional responses under different stresses. The results suggest that these genes play crucial roles in auxin homeostasis and environmental adaptation.
Article
Genetics & Heredity
Li-Qin Hu, Jin-Hui Chang, Shi-Xia Yu, Yu-Tong Jiang, Rong-Han Li, Ji-Xuan Zheng, Yan-Jie Zhang, Hong-Wei Xue, Wen-Hui Lin
Summary: Ovule initiation plays a crucial role in determining seed number and yield. In this study, the researchers investigate the regulatory mechanisms of ovule initiation and discover the involvement of PIN3, STK, and brassinosteroid in this process. The results provide important insights into increasing seed number and yield of cruciferous and leguminous crops.
Article
Plant Sciences
Yubin Wang, Jiapeng Xing, Jiachi Wan, Qingqing Yao, Yushi Zhang, Guohua Mi, Limei Chen, Zhaohu Li, Mingcai Zhang
Summary: This study investigates the role of auxin efflux carrier ZmPIN1a in root formation in maize in response to NO3- supply. The results show that low NO3- levels promote primary root elongation while repressing lateral root primordia development. Additionally, low NO3- conditions up-regulate the expression of ZmPIN1a, which affects IAA transport and accumulation and subsequently modulates root formation.
Article
Biology
Helia Cardoso, Catarina Campos, Dariusz Grzebelus, Conceicao Egas, Augusto Peixe
Summary: This study characterized the PIN gene family in two olive genotypes and highlighted their role in stress responses. Different patterns of gene diversification and subfamily expansion were observed. The gene structure analysis revealed implications for protein specificities and functionality. RNA-seq data showed expression changes of OePINs in response to stress factors. This study emphasizes the importance of PIN genes in stress responses and contributes to a holistic understanding of the role of auxins in plants.
Article
Biochemistry & Molecular Biology
Yun-Shil Gho, Min-Yeong Song, Do-Young Bae, Heebak Choi, Ki-Hong Jung
Summary: This study investigated the expression patterns of rice PIN-family genes and their involvement in the ammonium-dependent response, revealing a link between nitrogen utilization and auxin transporters. Results showed that ammonium supplementation reduced auxin distribution and expression patterns of OsPIN genes in response to nitrogen deficiency, suggesting that auxin is involved in the ammonium assimilation process in rice.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Plant Sciences
Huai-Na Gao, Han Jiang, Xin-Yu Lian, Jian-Ying Cui, Chun-Xiang You, Yu-Jin Hao, Yuan-Yuan Li
Summary: In this study, 26 potential LTPG genes were identified in apple using bioinformatics methods, and 20 of them were confirmed as MdLTPG family members based on subcellular localization predictions. These MdLTPG genes were induced by growth conditions and one protein was shown to interact with another protein, collectively participating in wax transport during plant growth and development.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Jiangping Mao, Chundong Niu, Ke Li, Li Fan, Zhimin Liu, Shaohuan Li, Doudou Ma, Muhammad Mobeen Tahir, Libo Xing, Caiping Zhao, Juanjuan Ma, Na An, Mingyu Han, Xiaolin Ren, Dong Zhang
Summary: This study confirmed the relationship between cytokinin and adventitious root formation in apple rootstocks. It was found that the expression of MdTCP17 and MdWOX11 was involved in the regulation of cytokinin-mediated inhibition of adventitious root primordium formation. The results provide valuable insights into the molecular mechanisms underlying this process.
Article
Biochemistry & Molecular Biology
Sonali Roy, Andrew Breakspear, Donna Cousins, Ivone Torres-Jerez, Kirsty Jackson, Anil Kumar, Yangyang Su, Cheng-Wu Liu, Nick Krom, Michael Udvardi, Ping Xu, Jeremy D. Murray
Summary: Three previously unreported ABC subfamily B transporters, named AMN1, AMN2, and AMN3, are strongly expressed in symbiotically infected tissues, with critical roles in nodulation and mycorrhization. Further studies are needed to identify potential substrates of these transporters and understand their roles in beneficial symbioses.
MOLECULAR PLANT-MICROBE INTERACTIONS
(2021)