Auxin response factors and plant growth and development

2011 ◽  
Vol 33 (12) ◽  
pp. 1335-1346 ◽  
Author(s):  
Zhen-Hua LIU ◽  
Yan-Chong YU ◽  
Feng-Ning XIANG
Keyword(s):  
Plant Growth ◽  
Growth And Development ◽  
Plant Growth And Development ◽  
Auxin Response ◽  
Response Factors ◽  
Auxin Response Factors

scholarly journals Genome-Wide Identification and Comparative Analysis of ARF Family Genes in Three Apiaceae Species

2021 ◽  
Vol 11 ◽  
Author(s):  
Qiaoying Pei ◽  
Nan Li ◽  
Qihang Yang ◽  
Tong Wu ◽  
Shuyan Feng ◽  
...  
Keyword(s):  
Plant Growth ◽  
Gene Family ◽  
Growth And Development ◽  
Expression Patterns ◽  
Gene Families ◽  
Plant Growth And Development ◽  
Response Factors ◽  
Auxin Response Factors ◽  
Functional Analyses ◽  
Significant Positive Selection

The family Apiaceae includes many important vegetables and medicinal plants. Auxin response factors (ARFs) play critical roles in regulating plant growth and development. Here, we performed a comprehensive analysis of the ARF gene family in three Apiaceae species, celery, coriander, and carrot, and compared the results with the ARF gene family of lettuce, Arabidopsis, and grape. We identified 156 ARF genes in all six species and 89 genes in the three Apiaceae species, including 28, 34, and 27 in celery, coriander, and carrot, respectively. The paralogous gene number in coriander was far greater than that in carrot and celery. Our analysis revealed that ARF genes of the three Apiaceae species in 34 branches of the phylogenetic tree underwent significant positive selection. Additionally, our findings indicated that whole-genome duplication played an important role in ARF gene family expansion. Coriander contained a greater number of ARF genes than celery and carrot because of more gene duplications and less gene losses. We also analyzed the expression of ARF genes in three tissues by RNA-seq and verified the results by quantitative real-time PCR. Furthermore, we found that several paralogous genes exhibited divergent expression patterns. Overall, this study provides a valuable resource for exploring how ARF family genes regulate plant growth and development in other plants. Since this is the first report of the ARF gene family in Apiaceae, our results will serve as a guide for comparative and functional analyses of ARF and other gene families in Apiaceae.

scholarly journals Genome-Wide Identification, Phylogeny, and Expression Analysis of ARF Genes Involved in Vegetative Organs Development in Switchgrass

2018 ◽  
Vol 2018 ◽  
pp. 1-13 ◽  
Author(s):  
Jianli Wang ◽  
Zhenying Wu ◽  
Zhongbao Shen ◽  
Zetao Bai ◽  
Peng Zhong ◽  
...  
Keyword(s):  
Growth And Development ◽  
Panicum Virgatum ◽  
Expression Profiles ◽  
Perennial Grass ◽  
Warm Season ◽  
Auxin Response ◽  
Response Factors ◽  
Vegetative Organs ◽  
Auxin Response Factors ◽  
Depth Study

Auxin response factors (ARFs) have been reported to play vital roles during plant growth and development. In order to reveal specific functions related to vegetative organs in grasses, an in-depth study of the ARF gene family was carried out in switchgrass (Panicum virgatum L.), a warm-season C4 perennial grass that is mostly used as bioenergy and animal feedstock. A total of 47 putative ARF genes (PvARFs) were identified in the switchgrass genome (2n = 4x = 36), 42 of which were anchored to the seven pairs of chromosomes and found to be unevenly distributed. Sixteen PvARFs were predicted to be potential targets of small RNAs (microRNA160 and 167). Phylogenetically speaking, PvARFs were divided into seven distinct subgroups based on the phylogeny, exon/intron arrangement, and conserved motif distribution. Moreover, 15 pairs of PvARFs have different temporal-spatial expression profiles in vegetative organs (2nd, 3rd, and 4th internode and leaves), which implies that different PvARFs have specific functions in switchgrass growth and development. In addition, at least 14 pairs of PvARFs respond to naphthylacetic acid (NAA) treatment, which might be helpful for us to study on auxin response in switchgrass. The comprehensive analysis, described here, will facilitate the future functional analysis of ARF genes in grasses.

Diketopiperazine Modulates Arabidopsis thaliana Root System Architecture by Promoting Interactions of Auxin Receptor TIR1 and IAA7/17 Proteins

2021 ◽  
Author(s):  
Lujun Yin ◽  
Xiaodong Chen ◽  
Q i Chen ◽  
Dongqing Wei ◽  
Xiang-Yang Hu ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Plant Growth ◽  
System Architecture ◽  
Growth And Development ◽  
Lateral Root ◽  
Root System Architecture ◽  
Signal Molecules ◽  
Plant Growth And Development ◽  
Auxin Response ◽  
Auxin Receptor

ABSTRACT Plants can detect the quorum sensing (QS) signaling molecules of microorganisms, such as amino acids, fat derivatives and diketopiperazines (DKPs), thus allowing the exchange information to promote plant growth and development. Here, we evaluated the effects of 12 synthesized DKPs on Arabidopsis thaliana roots and studied their underlying mechanisms of action. Results showed that, as QS signal molecules, the DKPs promoted lateral root development and root hair formation in A.thaliana to differing degrees. The DKPs enhanced the polar transport of the plant hormone auxin from the shoot to root and triggered the auxin-responsive protein IAA7/17 to decrease the auxin response factor, leading to the accumulation of auxin at the root tip and accelerated root growth. In addition, the DKPs induced the development of lateral roots and root hair in the A. thaliana root system architecture via interference with auxin receptor transporter inhibitor response protein 1 (TIR1). A series of TIR1 sites that potentially interact with DKPs were also predicted using molecular docking analysis. Mutations of these sites inhibited the phosphorylation of TIR1 after DKP treatment, thereby inhibiting lateral root formation, especially TIR1-1 site. This study identified several DKP signal molecules in the QS system that can promote the expression of auxin response factors ARF7/19 via interactions of TIR1 and IAA7/17 proteins, thus promoting plant growth and development.

scholarly journals Genome-wide identification and expression analysis of auxin response factors in peanut (Arachis hypogaea L.)

PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e12319
Author(s):  
Peipei Li ◽  
Qian Ma ◽  
Chengxin Qu ◽  
Shuliang Zhu ◽  
Kunkun Zhao ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Plant Growth And Development ◽  
Auxin Response ◽  
Response Factors ◽  
Auxin Response Factors ◽  
Genome Data ◽  
Genome Wide ◽  
Arachis Hypogaea L ◽  
Pod Development ◽  
Cultivated Species

Auxin response factors (ARFs) are transcription factors that regulate the expression of auxin response genes, and have important functions in plant growth and development. In this study, available genome data for peanut (Arachis hypogaea L.) were used to identify AhARF genes. In total, 61 AhARFs and 23 AtARFs were divided into six groups (I–VI). Molecular structural analysis revealed that the protein members of AhARF contain at least two domains, the B3 domain and the Auxin-resp domain, and that some have a C-terminal dimerisation domain. Screening of the transcriptome data of 22 tissues of A. hypogaea cv. Tifrunner in a public database showed high expression levels of AhARF2 and AhARF6. AhARF6 was expressed more highly in the stem and branch than in the root and leaf of the wild species Arachis monticola (A. mon) and cultivated species H103. After treatment with exogenous auxin (NAA), the expression of AhARF6 was inhibited, and this inhibition was greater in A. mon than in H103. The transcriptome map revealed that the expression of AhARF6 was higher in the larger pods of H8107 and ZP06 than in the medium pods of H103 and small pods of A. mon. Moreover, AhARF6-5 was proven to be localised in the nucleus, consistent with the location of AtARF6. These results suggest that AhARF6 may play an important role in pod development in peanut.

scholarly journals Up in the air: Untethered Factors of Auxin Response

F1000Research ◽  
2016 ◽  
Vol 5 ◽  
pp. 133 ◽  
Author(s):  
Samantha K. Powers ◽  
Lucia C. Strader
Keyword(s):  
Cell Division ◽  
Plant Growth ◽  
Growth And Development ◽  
Essential Role ◽  
S Phase ◽  
Auxin Signaling ◽  
Plant Growth And Development ◽  
Auxin Response ◽  
Transport Inhibitor ◽  
Auxin Binding

As a prominent regulator of plant growth and development, the hormone auxin plays an essential role in controlling cell division and expansion. Auxin-responsive gene transcription is mediated through the TRANSPORT INHIBITOR RESPONSE1/AUXIN SIGNALING F-BOX (TIR1/AFB) pathway. Roles for TIR1/AFB pathway components in auxin response are understood best, but additional factors implicated in auxin responses require more study. The function of these factors, including S-Phase Kinase-Associated Protein 2A (SKP2A), SMALL AUXIN UP RNAs (SAURs), INDOLE 3-BUTYRIC ACID RESPONSE5 (IBR5), and AUXIN BINDING PROTEIN1 (ABP1), has remained largely obscure. Recent advances have begun to clarify roles for these factors in auxin response while also raising additional questions to be answered.

Mechanisms of ethylene biosynthesis and response in plants

2015 ◽  
Vol 58 ◽  
pp. 61-70 ◽  
Author(s):  
Paul B. Larsen
Keyword(s):  
Plant Growth ◽  
Growth And Development ◽  
Ethylene Biosynthesis ◽  
Unsaturated Hydrocarbon ◽  
Flower Senescence ◽  
Detailed Knowledge ◽  
Plant Growth And Development ◽  
Step Process ◽  
Ethylene Response ◽  
Ethylene Signalling

Ethylene is the simplest unsaturated hydrocarbon, yet it has profound effects on plant growth and development, including many agriculturally important phenomena. Analysis of the mechanisms underlying ethylene biosynthesis and signalling have resulted in the elucidation of multistep mechanisms which at first glance appear simple, but in fact represent several levels of control to tightly regulate the level of production and response. Ethylene biosynthesis represents a two-step process that is regulated at both the transcriptional and post-translational levels, thus enabling plants to control the amount of ethylene produced with regard to promotion of responses such as climacteric flower senescence and fruit ripening. Ethylene production subsequently results in activation of the ethylene response, as ethylene accumulation will trigger the ethylene signalling pathway to activate ethylene-dependent transcription for promotion of the response and for resetting the pathway. A more detailed knowledge of the mechanisms underlying biosynthesis and the ethylene response will ultimately enable new approaches to be developed for control of the initiation and progression of ethylene-dependent developmental processes, many of which are of horticultural significance.

Response of Poinsettia Growth and Development to Ratio of Radiant to Thermal Energy

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 508e-508
Author(s):  
Bin Liu ◽  
Royal D. Heins
Keyword(s):  
Plant Growth ◽  
Thermal Energy ◽  
Growth And Development ◽  
Model Simulation ◽  
Interactive Effect ◽  
Dry Weight ◽  
Plant Spacing ◽  
Plant Growth And Development ◽  
Daily Light Integral ◽  
Highly Correlated

A concept of ratio of radiant to thermal energy (RRT) has been developed to deal with the interactive effect of light and temperature on plant growth and development. This study further confirms that RRT is a useful parameter for plant growth, development, and quality control. Based on greenhouse experiments conducted with 27 treatment combinations of temperature, light, and plant spacing, a model for poinsettia plant growth and development was constructed using the computer program STELLA II. Results from the model simulation with different levels of daily light integral, temperature, and plant spacing showed that the RRT significantly affects leaf unfolding rate when RRT is lower than 0.025 mol/degree-day per plant. Plant dry weight is highly correlated with RRT; it increases linearly as RRT increases.

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