Genome-Wide Identification of PIN and PILS Gene Families in Areca catechu and the Potential Role of AcPIN6 in Lateral Brace Root Formation

PIN-FORMED (PIN) and PIN-LIKES (PILS) are two families of auxin transporters that control the directional cell-to-cell transport and intracellular accumulation of auxin, thereby influencing plant growth and development. Most knowledge of PINs and PILSs was obtained from the dicot model plant . Here,...

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Published inPlants (Basel) Vol. 12; no. 1; p. 33
Main Authors Wang, Yicheng, Zhou, Guangzhen, Luo, Haifen, Li, Xinyu, Zhang, Kelan, Wan, Yinglang
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 21.12.2022
MDPI
Subjects
Areca catechu
Auxins
brace root
Catechu
Cell division
Chromosomes
Cocos nucifera
Elaeis guineensis
Gene families
Genes
Genomes
Phoenix dactylifera
Phylogenetics
Phylogeny
PILS
PilS gene
PIN-FORMED
Plant growth
Proteins
Roots
brace root
Areca catechu
PILS
PIN-FORMED
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Summary:PIN-FORMED (PIN) and PIN-LIKES (PILS) are two families of auxin transporters that control the directional cell-to-cell transport and intracellular accumulation of auxin, thereby influencing plant growth and development. Most knowledge of PINs and PILSs was obtained from the dicot model plant . Here, we focus on the distribution and expression of the and gene families in areca palm ( ), a monocot tree. The whole genomic dataset of areca palm was used to identify twelve s and eight s, and a phylogenetic tree was constructed of and together with several other palm species, including the date palm ( ), oil palm ( ), and coconut ( . We further analyzed the expression patterns of and in areca palm, and found that displayed an extremely high transcriptional abundance in the brace roots and was extremely stimulated in the lateral root primordium. This result implies that plays an important role in the growth and formation of brace roots, especially in lateral root initiation. We also overexpressed and in , and the results revealed that the PIN6 localized on the plasma membrane and affected auxin-related phenomena. Taken together, we analyzed the evolutionary relationships of and in palm species, and the roles of in areca palm root formation. The results will improve the understanding of root system construction in large palm trees.
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These authors contributed equally to this work.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants12010033