The Role of the REPLUMLESS Homeodomain Protein in Patterning the Arabidopsis Fruit

Roeder, Adrienne; Ferrándiz, Cristina; Yanofsky, Martin F.

doi:10.1016/j.cub.2003.08.027

Cited by 270 publications

(372 citation statements)

References 21 publications

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“…In carpels, KNAT6 and KNAT2 are expressed in the boundaries between the replum and the valves, while BP, STM, and PNY are expressed in the replum (this work; Long et al, 1996;Roeder et al, 2003;Alonso-Cantabrana et al, 2007). Both its layered structure and its role in generating ovule primordia make the replum a true meristem.…”

Section: The Loss Of Knat6 Also Suppresses the Pny Fruit Defectmentioning

confidence: 96%

“…pny mutants are characterized by phyllotaxy defects, partial loss of apical dominance, and reduced stature (Byrne et al, 2003;Roeder et al, 2003;Smith and Hake, 2003;Bhatt et al, 2004). In addition, the pny mutant shows fruit alterations, such as defects in replum differentiation and in septum fusion (Byrne et al, 2003;Roeder et al, 2003). To investigate the interaction between KNAT2, KNAT6, and PNY, we generated the knat2 pny, knat6 pny, and knat2 knat6 pny mutants.…”

Section: The Inactivation Of Knat6 Rescues the Pny Phenotypementioning

confidence: 99%

“…The pny mutant also exhibits defects in fruit development as the pny fruit shows a narrower replum, an abnormal pattern of lignification, and septum fusion defects (Roeder et al, 2003;Figures 8D to 8F compared with 8A to 8C). The replum and the septum of the knat6 mutant were wild type ( Figures 8G to 8I).…”

Section: The Inactivation Of Knat6 Rescues the Pny Phenotypementioning

confidence: 99%

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Interaction ofKNAT6andKNAT2withBREVIPEDICELLUSandPENNYWISEinArabidopsisInflorescences

et al. 2008

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The three amino acid loop extension (TALE) homeodomain superfamily, which comprises the KNOTTED-like and BEL1-like families, plays a critical role in regulating meristem activity. We previously demonstrated a function for KNAT6 (for KNOTTED-like from Arabidopsis thaliana 6) in shoot apical meristem and boundary maintenance during embryogenesis. KNAT2, the gene most closely related to KNAT6, does not play such a role. To investigate the contribution of KNAT6 and KNAT2 to inflorescence development, we examined their interactions with two TALE genes that regulate internode patterning, BREVIPEDICELLUS (BP) and PENNYWISE (PNY). Our data revealed distinct and overlapping interactions of KNAT6 and KNAT2 during inflorescence development. Removal of KNAT6 activity suppressed the pny phenotype and partially rescued the bp phenotype. Removal of KNAT2 activity had an effect only in the absence of both BP and KNAT6 or in the absence of both BP and PNY. Consistent with this, KNAT6 and KNAT2 expression patterns were enlarged in both bp and pny mutants. Thus, the defects seen in pny and bp are attributable mainly to the misexpression of KNAT6 and to a lesser extent of KNAT2. Hence, our data showed that BP and PNY restrict KNAT6 and KNAT2 expression to promote correct inflorescence development. This interaction was also revealed in the carpel.

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Section: The Loss Of Knat6 Also Suppresses the Pny Fruit Defectmentioning

confidence: 96%

Section: The Inactivation Of Knat6 Rescues the Pny Phenotypementioning

confidence: 99%

Section: The Inactivation Of Knat6 Rescues the Pny Phenotypementioning

confidence: 99%

See 1 more Smart Citation

Interaction ofKNAT6andKNAT2withBREVIPEDICELLUSandPENNYWISEinArabidopsisInflorescences

et al. 2008

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“…2) (Byrne et al, 2003;Roeder et al, 2003;Smith and Hake, 2003). Additional STM-BELL dimers are likely to promote SAM activity, as triple mutants of the BELL genes BLR, POUND-FOOLISH, ARABIDOPSIS THALIANA HOMEOBOX1 are shootless (Rutjens et al, 2009).…”

Section: Petal Spurmentioning

confidence: 99%

KNOX genes: versatile regulators of plant development and diversity

2010

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SummaryKnotted1-like homeobox (KNOX) proteins are homeodomain transcription factors that maintain an important pluripotent cell population called the shoot apical meristem, which generates the entire above-ground body of vascular plants. KNOX proteins regulate target genes that control hormone homeostasis in the meristem and interact with another subclass of homeodomain proteins called the BELL family. Studies in novel genetic systems, both at the base of the land plant phylogeny and in flowering plants, have uncovered novel roles for KNOX proteins in sculpting plant form and its diversity. Here, we discuss how KNOX proteins influence plant growth and development in a versatile context-dependent manner.

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“…Valve margin identity is developed and maintained via the expression of several transcription factors including the MADS-box genes SHATTERPROOF1 (SHP1), and SHP2, and basic helix-loop-helix genes INDEHISCENT (IND) and ALCATRAZ (ALC) [80][81][82]. The activity of these regulatory genes is restricted to the valve margins, as their expression is repressed by REPLUMLESS (RPL) gene in the replum [83], and FRUITFULL (FUL) gene in the valves [84].…”

Section: B Shattering In Arabidopsismentioning

confidence: 99%

Pod Shattering: A Homologous Series of Variation Underlying Domestication and an Avenue for Crop Improvement

Ogutcen¹,

Pandey²,

Khan³

et al. 2018

Preprint

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In wild habitats, fruit dehiscence is a critical strategy for seed dispersal; however, in cultivated crops it is one of the major sources of yield loss. Therefore, indehiscence of fruits, pods, etc., was likely to be one of the first traits strongly selected in crop domestication. Even with the historical selection against dehiscence in early domesticates, it is a trait still targeted in many breeding programs, particularly in minor or underutilized crops. Here, we review of this trait in pulse (grain legume) crops, which are of growing importance as a source of protein in human and livestock diets, and which have received less attention iii) the molecular pathways underlying this important trait, iv) an overview of the extent of crop losses due to shattering, and the effects of environmental factors on shattering, and, v) efforts to reduce shattering in crops. While our focus is mainly pulse crops, we also included comparisons to crucifers and cereals because there is extensive research on shattering in these taxa.

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The Role of the REPLUMLESS Homeodomain Protein in Patterning the Arabidopsis Fruit

Cited by 270 publications

References 21 publications

Interaction ofKNAT6andKNAT2withBREVIPEDICELLUSandPENNYWISEinArabidopsisInflorescences

Interaction ofKNAT6andKNAT2withBREVIPEDICELLUSandPENNYWISEinArabidopsisInflorescences

KNOX genes: versatile regulators of plant development and diversity

Pod Shattering: A Homologous Series of Variation Underlying Domestication and an Avenue for Crop Improvement

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