Functional analysis of indole 3-hexanoic acid as a novel auxin from Arabidopsis thaliana

Song, Ping; Xu, Hui; Zhang, Jixiu; Chen, Huatao; Li, Li; Qu, Youxing; Lin, Feng; Zhang, Qun

doi:10.1007/s00425-021-03719-9

Cited by 4 publications

(3 citation statements)

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“…The phytohormone auxin IBA is involved in regulating plant growth and development, and it plays an important role in the responses to biotic and abiotic stresses, including drought, salinity, and cold [ 23 ]. In this study, we found that transgenic tobacco overexpressing LkABCG36 grew rapidly, which may have been related to LkABCG36 catalyzing the export of IBA [ 20 , 21 ]. In addition, we detected many significantly upregulated genes encoding auxin or auxin receptors in the stem tissue of transgenic tobacco overexpressing LkABCG36 ; for example, LOC109223084 , encoding auxin-responsive protein and LOC104113066 and LOC107784906, encoding indole-3-acetic acid-amido (IAA) synthetase.…”

Section: Discussionmentioning

confidence: 99%

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Transcriptomic Insights into Functions of LkABCG36 and LkABCG40 in Nicotiana tabacum

Sun

Jiang

et al. 2023

Plants

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ATP-binding cassette transporters (ABC transporters) play crucial physiological roles in plants, such as being involved in the growth and development of organs, nutrient acquisition, response to biotic and abiotic stress, disease resistance, and the interaction of the plant with its environment. The ABCG subfamily of proteins are involved in the process of plant vegetative organ development. In contrast, the functions of the ABCG36 and ABCG40 transporters have received considerably less attention. Here, we investigated changes in the transcriptomic data of the stem tissue of transgenic tobacco (Nicotiana tabacum) with LkABCG36 and LkABCG40 (Larix kaempferi) overexpression, and compared them with those of the wild type (WT). Compared with the WT, we identified 1120 and 318 differentially expressed genes (DEGs) in the LkABCG36 and LkABCG40 groups, respectively. We then annotated the function of the DEGs against the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) databases. The results showed enrichment in cell wall biogenesis and hormone signal transduction functional classes in transgenic LkABCG36 tobacco. In transgenic LkABCG40 tobacco, the enrichment was involved in metabolic and biosynthetic processes, mainly those related to environmental adaptation. In addition, among these DEGs, many auxin-related genes were significantly upregulated in the LkABCG36 group, and we found key genes involved in environmental adaptation in the LkABCG40 group, including an encoding resistance protein and a WRKY transcription factor. These results suggest that LkABCG36 and LkABCG40 play important roles in plant development and environmental adaptation. LkABCG36 may promote plant organ growth and development by increasing auxin transport, whereas LkABCG40 may inhibit the expression of WRKY to improve the resistance of transgenic tobacco. Our results are beneficial to researchers pursuing further study of the functions of ABCG36 and ABCG40.

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Section: Discussionmentioning

confidence: 99%

“…The AtABCG36 transporter plays a dual role in the transport of IBA [ 20 , 21 ], and AtABCG40 is a high-affinity abscisic acid (ABA) transporter [ 22 ]. However, no studies have been conducted on the function of LkABCG36 and LkABCG40 in Larix kaempferi.…”

Section: Introductionmentioning

confidence: 99%

Transcriptomic Insights into Functions of LkABCG36 and LkABCG40 in Nicotiana tabacum

Sun

Jiang

et al. 2023

Plants

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“…Studies have indicated that IHA can regulate the secretion of growth hormones by converting to IBA, and can also inhibit the transformation of IBA to IAA. Additionally, IHA has been found to induce responses that are distinct from IBA, such as increased amounts of GH3.3 and ACS4 ( Song et al., 2021 ). However, the signaling process of IHA requires further exploration and study.…”

Section: Plant Growth Promotersmentioning

confidence: 99%

The role of indole derivative in the growth of plants: A review

et al. 2023

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Indole compounds with their unique properties of mimicking peptide structures and reversible binding to enzymes are of great exploitative value in the regulation of plant growth. They stimulate root and fruit formation and activate the plant’s immune system against biotic and abiotic factors harmful to the plant. Analysis of target recognition, receptor recognition, key activation sites and activation mechanisms of indoles in plant to enhance crop growth or disease resistance is a crucial step for further developing compounds as plant growth regulators and immune inducers. Therefore, this review focused on the mechanism of action of indoles in regulating plant growth and enhancing plant resistance to biotic and abiotic stresses.

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l‐2‐Aminopimelic acid acts as an auxin mimic to induce lateral root formation across diverse plant species

Tabeta,

Hirai

2024

FEBS Letters

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The identification of chemicals that modulate plant development and adaptive responses to stresses has attracted increasing attention for agricultural applications. Recent basic studies have identified functional amino acids that are essential for plant organogenesis, indicating that amino acids can regulate plant growth. In this study, we newly identified 2‐aminopimelic acid (2APA), a nonproteinogenic amino acid, as a novel bioactive compound involved in root morphogenesis. This biological effect was confirmed in several plant species. Our phenotypic analysis revealed that the bioactive 2APA is an l‐form stereoisomer. Overall, our study identified a promising root growth regulator and provided insight into the intricate metabolism related to root morphology.

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Functional analysis of indole 3-hexanoic acid as a novel auxin from Arabidopsis thaliana

Cited by 4 publications

References 50 publications

Transcriptomic Insights into Functions of LkABCG36 and LkABCG40 in Nicotiana tabacum

Transcriptomic Insights into Functions of LkABCG36 and LkABCG40 in Nicotiana tabacum

The role of indole derivative in the growth of plants: A review

l‐2‐Aminopimelic acid acts as an auxin mimic to induce lateral root formation across diverse plant species

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