A WUSCHEL-related homeobox 3B gene, depilous (dep), confers glabrousness of rice leaves and glumes

Angeles‐Shim, Rosalyn B.; Asano, Katsuaki; Takashi, Tomonori; Shim, Junghyun; Kuroha, Takeshi; Ayano, Madoka; Ashikari, Motoyuki

doi:10.1186/1939-8433-5-28

Cited by 36 publications

(39 citation statements)

References 41 publications

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“…Such morphological differences of the PLgh germplasm (Padi Pohon Batu and IARI 6184B) from a traditional pubescent cultivar (Rondo) have not been reported in previous studies, such as Hu et al (1999), Luo et al (2000), Rutger and Mackill (2001), and Li et al (2010a). Plant leaf pubescence or trichomes play an important role in biotic (insects and diseases stresses [Xu et al, 2002; Pfeiffer et al, 2003; Zhang et al, 2003; Kim et al, 2011]) and abiotic stress (weather and soil stresses) tolerance (Saltveit and Hepler 2004; Du et al, 2009; Angeles‐Shim et al, 2012). Pfeiffer et al (2003) observed a delay of aphid infection in soybean cultivars with high density of pubescence, which functioned as a mechanical barrier to aphid probing.…”

Section: Resultsmentioning

confidence: 99%

Phenotypic Characterization and Genetic Analysis of Rice with Pubescent Leaves and Glabrous Hulls (PLgh)

Wan

et al. 2013

Crop Science

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Pubescence (hairs or trichomes) of leaves is advantageous against biotic and abiotic stress, and that of hulls is disadvantageous as it interferes with field operations, such as harvesting and processing. Previous phenotypic and genotypic studies on rice (Oryza sativa L.) pubescence used materials that had pubescent or glabrous leaves and hulls. From the National Small Grains Collection (NSGC), two accessions with pubescent leaves and glabrous hulls (PLgh) were identified. These PLgh accessions had more, longer, and softer trichomes on the leaves than traditional pubescent materials. Our objective was to study the inheritance of the PLgh trait. Crosses of PLgh plants with a genotype having glabrous leaves and hulls showed that leaf pubescence in the PLgh material was controlled by a dominant gene because no segregation for glabrous hull in F2 generation occurred. Chi‐square values for 3:1 pubescent leaf and glabrous hull:glabrous leaf and hull F2 ratio were 0.283 (P = 0.626) and 0.919 (P = 0.338) in two PLgh crosses, Wells × IARI 6184B and Wells × Padi Pohon Batu, respectively. However, in crosses of PLgh with three genotypes (You I B, Rondo, and Xieqingzao B) having pubescent leaves and hulls, an F2 ratio of 12:3:1 pubescent leaf and hull:pubescent leaf and glabrous hull:glabrous leaf and hull was found in most cases, suggesting two genes were involved in the inheritance. Use of the PLgh germplasm (pubescent leaves) in rice breeding should be advantageous as a defense mechanism against biotic and abiotic stresses while avoiding the disadvantages of pubescent hulls in transportation and storage.

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Section: Resultsmentioning

confidence: 99%

Phenotypic Characterization and Genetic Analysis of Rice with Pubescent Leaves and Glabrous Hulls (PLgh)

Wan

et al. 2013

Crop Science

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“…Recently, OsWOX3B / DEP , a homologue of OsWOX3A , has been reported to regulate the formation of bristle‐type trichomes in the leaves and glumes (Angeles‐Shim et al ., ). Although they belong to the same subfamily of OsWOX proteins (Fig.…”

Section: Discussionmentioning

confidence: 97%

“…However, RNAi‐mediated downregulation of OsWOX3A produced no visible phenotype (Dai et al ., ). OsWOX3B / DEP has been identified recently by positional cloning and functions in the regulation of trichome formation in leaves and glumes (Angeles‐Shim et al ., ).…”

Section: Introductionmentioning

confidence: 97%

The rice narrow leaf2 and narrow leaf3 loci encode WUSCHEL‐related homeobox 3A (OsWOX3A) and function in leaf, spikelet, tiller and lateral root development

et al. 2013

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SummaryIn order to understand the molecular genetic mechanisms of rice (Oryza sativa) organ development, we studied the narrow leaf2 narrow leaf3 (nal2 nal3; hereafter nal2/3) double mutant, which produces narrow-curly leaves, more tillers, fewer lateral roots, opened spikelets and narrow-thin grains.We found that narrow-curly leaves resulted mainly from reduced lateral-axis outgrowth with fewer longitudinal veins and more, larger bulliform cells. Opened spikelets, possibly caused by marginal deformity in the lemma, gave rise to narrow-thin grains.Map-based cloning revealed that NAL2 and NAL3 are paralogs that encode an identical OsWOX3A (OsNS) transcriptional activator, homologous to NARROW SHEATH1 (NS1) and NS2 in maize and PRESSED FLOWER in Arabidopsis. OsWOX3A is expressed in the vascular tissues of various organs, where nal2/3 mutant phenotypes were displayed. Expression levels of several leaf development-associated genes were altered in nal2/3, and auxin transportrelated genes were significantly changed, leading to pin mutant-like phenotypes such as more tillers and fewer lateral roots.OsWOX3A is involved in organ development in rice, lateral-axis outgrowth and vascular patterning in leaves, lemma and palea morphogenesis in spikelets, and development of tillers and lateral roots.

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“…Unlike marginal domain‐specific expression domain of WOX3/PRS (Nardmann et al ; Shimizu et al ), sister WOX3 s are expressed in a complete ring around the initiating phytomer and are then restricted to the phytomer base (Nardmann et al ). In rice, these genes are strongly expressed later on in the intercalary region and nodal vasculature of young internodes (Figure C; Angeles‐Shim et al ), suggesting subfunctionalization of the sister WOX3 clade for the distinctive structures of grasses. However, to date, only the sister WOX3 in rice has been characterized to control trichome formation (Angeles‐Shim et al ; Zhang et al ; Yoshikawa et al ) so the relevance of its expression pattern is unclear.…”

Section: Regulation Of Subapical Proliferationmentioning

confidence: 96%

“…In rice, these genes are strongly expressed later on in the intercalary region and nodal vasculature of young internodes (Figure C; Angeles‐Shim et al ), suggesting subfunctionalization of the sister WOX3 clade for the distinctive structures of grasses. However, to date, only the sister WOX3 in rice has been characterized to control trichome formation (Angeles‐Shim et al ; Zhang et al ; Yoshikawa et al ) so the relevance of its expression pattern is unclear.…”

Section: Regulation Of Subapical Proliferationmentioning

confidence: 96%

How plants grow up

McKim

2019

JIPB

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A plant's lateral structures, such as leaves, branches and flowers, literally hinge on the shoot axis, making its integrity and growth fundamental to plant form. In all plants, subapical proliferation within the shoot tip displaces cells downward to extrude the cylindrical stem. Following the transition to flowering, many plants show extensive axial elongation associated with increased subapical proliferation and expansion. However, the cereal grasses also elongate their stems, called culms, due to activity within detached intercalary meristems which displaces cells upward, elevating the grain‐bearing inflorescence. Variation in culm length within species is especially relevant to cereal crops, as demonstrated by the high‐yielding semi‐dwarfed cereals of the Green Revolution. Although previously understudied, recent renewed interest the regulation of subapical and intercalary growth suggests that control of cell division planes, boundary formation and temporal dynamics of differentiation, are likely critical mechanisms coordinating axial growth and development in plants.

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A WUSCHEL-related homeobox 3B gene, depilous (dep), confers glabrousness of rice leaves and glumes

Cited by 36 publications

References 41 publications

Phenotypic Characterization and Genetic Analysis of Rice with Pubescent Leaves and Glabrous Hulls (PLgh)

Phenotypic Characterization and Genetic Analysis of Rice with Pubescent Leaves and Glabrous Hulls (PLgh)

The rice narrow leaf2 and narrow leaf3 loci encode WUSCHEL‐related homeobox 3A (OsWOX3A) and function in leaf, spikelet, tiller and lateral root development

How plants grow up

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