Gene Details:

• Gene ID: AT5G20490
• Gene Symbol: ATXIK, XI-17, XI-K, XIK
• Gene Name: MYOSIN XI K, MYOSIN XI-17
• Description: myosin family protein with Dil;(source:Araport11)
• TAIR Accession:
• Genome: Araport11_genome_release
• Species: Arabidopsis thaliana

Transcripts:

• AT5G20490.1     AT5G20490.2     AT5G20490.3

Plant Ontology Annotations:

• PO:0009001  — fruit — frucht (exact, German), fruto (exact, Spanish), 果実 (exact, Japanese), coenocarp (narrow), syncarp (narrow), aggregate fruit (broad), compound fruit (broad), dehiscent fruit (broad), diaspore (broad), indehiscent fruit (broad), multiple fruit (broad), propagule (broad)
• PO:0009005  — root — raíz (Spanish, exact), radices (exact, plural), radix (exact), 根 (Japanese, exact), aerial root (narrow), climbing root (narrow)
• PO:0009025  — vascular leaf — foliage leaf (exact), hoja vascular (Spanish, exact), leaf, vascular (exact), vascular leaves (exact, plural), 維管束のある葉, または維管束植物の葉 (Japanese, exact), crozier (related), macrophyll (related), megaphyll (related), ascidia (narrow), ascidium (narrow), fiddlehead (narrow), frond (narrow), needle-like leaf (narrow), pitcher (narrow), pitcher blade (narrow), pitcher-blade (narrow), scale-like leaf (narrow), sterile frond (narrow), trophophyll (narrow)
• PO:0009046  — flower — flor (Spanish, exact), 花 (Japanese, exact), floret (related), Asteraceae floret (narrow), basal flower (narrow), double flower (narrow), hermaphrodite flower (narrow), monoclinous flower (narrow), perfect flower (narrow)
• PO:0009047  — stem — caña (Spanish, exact), culm (exact), eje primario (Spanish, exact), primary axis (exact), primary stem (exact), tallo (Spanish, exact), tronco (Spanish, exact), 茎 (Japanese, exact), bole (narrow), cane (narrow), caudex (narrow), caudices (narrow), core (narrow), primocane (narrow), scape (narrow), stalk (narrow), trunk (narrow)

Germplasm Phenotype:

• 3KO  — Short hypocotyls when grown in dark in the absence of sucrose. Only partially rescued by addition of 15mM sucrose.
• SALK_067972C  — The xik-2 mutant has normal root growth, but its root hairs are only 50% of the length of wild type root hairs, and they have a hooked shape when grown on media with sugar. The stem trichomes are crooked and wavy and often have abnormally elongated stalks. The trichomes on the leaves also have size and shape irregularities. But, the total number of trichomes is the same for mutants and wild-type plants.
• SALK_067972C  — There are no obvious defects in the aerial tissues of xi-k mutant plants grown under normal conditions. The root length of the mutant is also normal, but, it has shorter roots hairs than wild-type plants. There are decreased rates of movement of Golgi stacks, peroxisomes, and mitochondria in root hairs and leaves.
• SALK_136682C  — The xik-1 mutant has normal root growth, but its root hairs are only 49% of the length of wild type root hairs, and they have a hooked shape when grown on media with sugar. The stem trichomes are crooked and wavy and often have abnormally elongated stalks. The trichomes on the leaves also have size and shape irregularities. But, the total number of trichomes is the same for mutants and wild-type plants.
• WiscDsLox417C12 (HOMOZYGOUS)  — There are no obvious defects in the aerial tissues of xi-k mutant plants grown under normal conditions. The root length of the mutant is also normal, but, it has shorter roots hairs than wild-type plants.
• xi-k / xi-1  — The xi-k / xi-1 double mutant plants are shorter and have smaller rosettes than wild type plants. Their reduced leaf size results from decreased cell size and decreased cell number. These double mutants produce fewer seeds per silique than wild type plants. In the leaf epidermis, Golgi stacks, peroxisomes, and mitochondria move more slowly in these mutant cells than in wild-type cells. Root hair length is reduced to ~35% of the wild type root hair length in these double mutants, but their root hair density is very similar to the wild type density.
• xi-k / xi-2  — The overall growth of the xi-k / xi-2 double mutant is normal. In the leaf epidermis, Golgi stacks, peroxisomes, and mitochondria move more slowly in these mutant cells than in wild-type cells. Root hair length is reduced to ~20% of the wild type root hair length in these double mutants, but their root hair density is very similar to the wild type density.
• xik-3  — The xik-3 mutant has normal root growth, but its root hairs are only 77% of the length of wild type root hairs, and they have a hooked shape when grown on media with sugar. The stem trichomes are crooked and wavy and often have abnormally elongated stalks. The trichomes on the leaves also have size and shape irregularities. But, the total number of trichomes is the same for mutants and wild-type plants.

Function-related keywords:

• fruit ,  root ,  vascular leaf ,  flower ,  stem

Literature:

• Analysis of the myosins encoded in the recently completed Arabidopsis thaliana genome sequence.   DOI:  10.1186/gb-2001-2-7-research0024 ;  PMID:  11516337
• Transcriptome analysis of sulfur depletion in Arabidopsis thaliana: interlacing of biosynthetic pathways provides response specificity.   DOI:  10.1046/j.1365-313x.2003.01657.x ;  PMID:  12609038
• Peroxisomal localization of a myosin XI isoform in Arabidopsis thaliana.   DOI:  10.1093/pcp/pci085 ;  PMID:  15792961
• Association of six YFP-myosin XI-tail fusions with mobile plant cell organelles.   DOI:  10.1186/1471-2229-7-6 ;  PMID:  17288617
• Two class XI myosins function in organelle trafficking and root hair development in Arabidopsis.   DOI:  10.1104/pp.107.113654 ;  PMID:  18178669
• Head-neck domain of Arabidopsis myosin XI, MYA2, fused with GFP produces F-actin patterns that coincide with fast organelle streaming in different plant cells.   DOI:  10.1186/1471-2229-8-74 ;  PMID:  18598361
• Overlapping functions of the four class XI myosins in Arabidopsis growth, root hair elongation, and organelle motility.   DOI:  10.1073/pnas.0810730105 ;  PMID:  19060218
• Transcriptome analysis of Arabidopsis wild-type and gl3-sst sim trichomes identifies four additional genes required for trichome development.   DOI:  10.1093/mp/ssp037 ;  PMID:  19626137
• Myosin XIK is a major player in cytoplasm dynamics and is regulated by two amino acids in its tail.   DOI:  10.1093/jxb/err265 ;  PMID:  21914656
• Myosins XI-K, XI-1, and XI-2 are required for development of pavement cells, trichomes, and stigmatic papillae in Arabidopsis.   DOI:  10.1186/1471-2229-12-81 ;  PMID:  22672737
• Identification of myosin XI receptors in Arabidopsis defines a distinct class of transport vesicles.   DOI:  10.1105/tpc.113.113704 ;  PMID:  23995081
• Processing-body movement in Arabidopsis depends on an interaction between myosins and DECAPPING PROTEIN1.   DOI:  10.1104/pp.113.233031 ;  PMID:  24525673
• Arabidopsis myosin XI: a motor rules the tracks.   DOI:  10.1104/pp.114.244335 ;  PMID:  25237128
• Myosins XI modulate host cellular responses and penetration resistance to fungal pathogens.   DOI:  10.1073/pnas.1405292111 ;  PMID:  25201952
• Regulation of organ straightening and plant posture by an actin-myosin XI cytoskeleton.   DOI:  10.1038/nplants.2015.31 ;  PMID:  27247032
• Arabidopsis Myosins XI1, XI2, and XIK Are Crucial for Gravity-Induced Bending of Inflorescence Stems.   DOI:  10.3389/fpls.2016.01932 ;  PMID:  28066484
• Myosin-driven transport network in plants.   DOI:  10.1073/pnas.1620577114 ;  PMID:  28096376
• Class XI Myosins Contribute to Auxin Response and Senescence-Induced Cell Death in Arabidopsis.   DOI:  10.3389/fpls.2018.01570 ;  PMID:  30538710
• Protein and metabolite composition of Arabidopsis stress granules.   DOI:  10.1111/nph.15690 ;  PMID:  30664249
• A role for Arabidopsis myosins in sugar-induced hypocotyl elongation.   DOI:  10.17912/micropub.biology.000276 ;  PMID:  32666043
• Arabidopsis thaliana myosin XIK is recruited to the Golgi through interaction with a MyoB receptor.   DOI:  10.1038/s42003-021-02700-2 ;  PMID:  34645991
• ABP1-TMK auxin perception for global phosphorylation and auxin canalization.   DOI:  10.1038/s41586-022-05187-x ;  PMID:  36071161

Sequences: