Search Results - "Koltunow, Anna M"

The genetic control of apomixis: asexual seed formation by Hand, Melanie L, Koltunow, Anna M G

“…Apomixis (asexual seed formation) is the result of a plant gaining the ability to bypass the most fundamental aspects of sexual reproduction: meiosis and…”
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Somatic small RNA pathways promote the mitotic events of megagametogenesis during female reproductive development in Arabidopsis by Tucker, Matthew R, Okada, Takashi, Hu, Yingkao, Scholefield, Andrew, Taylor, Jennifer M, Koltunow, Anna M G

“…Female gamete development in Arabidopsis ovules comprises two phases. During megasporogenesis, a somatic ovule cell differentiates into a megaspore mother cell…”
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Germline β−1,3-glucan deposits are required for female gametogenesis in Arabidopsis thaliana by Pinto, Sara C., Leong, Weng Herng, Tan, Hweiting, McKee, Lauren, Prevost, Amelie, Ma, Chao, Shirley, Neil. J., Petrella, Rosanna, Yang, Xiujuan, Koltunow, Anna M., Bulone, Vincent, Kanaoka, Masahiro M., Higashyiama, Tetsuya, Coimbra, Sílvia, Tucker, Matthew R.

“…Correct regulation of intercellular communication is a fundamental requirement for cell differentiation. In Arabidopsis thaliana , the female germline…”
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Sexual reproduction is the default mode in apomictic Hieracium subgenus Pilosella, in which two dominant loci function to enable apomixis by Koltunow, Anna M.G, Johnson, Susan D, Rodrigues, Julio C.M, Okada, Takashi, Hu, Yingkao, Tsuchiya, Tohru, Wilson, Saira, Fletcher, Pam, Ito, Kanae, Suzuki, Go, Mukai, Yasuhiko, Fehrer, Judith, Bicknell, Ross A

“…Asexual seed formation, or apomixis, in the Hieracium subgenus Pilosella is controlled by two dominant independent genetic loci, LOSS OF APOMEIOSIS (LOA) and…”
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Imprinting in rice: the role of DNA and histone methylation in modulating parent‐of‐origin specific expression and determining transcript start sites by Du, Miru, Luo, Ming, Zhang, Ruofang, Finnegan, E. Jean, Koltunow, Anna M. G

“…Over 200 imprinted genes in rice endosperm are known, but the mechanisms modulating their parental allele‐specific expression are poorly understood. Here we…”
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A detached leaf assay for testing transient gene expression and gene editing in cowpea ( Vigna unguiculata [L.] Walp.) by Juranić, Martina, Nagahatenna, Dilrukshi S K, Salinas-Gamboa, Rigel, Hand, Melanie L, Sánchez-León, Nidia, Leong, Weng Herng, How, Tracy, Bazanova, Natalia, Spriggs, Andrew, Vielle-Calzada, Jean-Philippe, Koltunow, Anna M G

“…The legume cowpea ( L.) is extensively grown in sub-Saharan Africa. Cowpea, like many legumes has proved recalcitrant to plant transformation. A rapid…”
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Apomixis: a developmental perspective by Koltunow, Anna M, Grossniklaus, Ueli

“…The term apomixis encompasses a suite of processes whereby seeds form asexually in plants. In contrast to sexual reproduction, seedlings arising from apomixis…”
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Enlarging Cells Initiating Apomixis in Hieracium praealtum Transition to an Embryo Sac Program prior to Entering Mitosis by Okada, Takashi, Hu, Yingkao, Tucker, Matthew R., Taylor, Jennifer M., Johnson, Susan D., Spriggs, Andrew, Tsuchiya, Tohru, Oelkers, Karsten, Rodrigues, Julio C.M., Koltunow, Anna M.G.

“…Hieracium praealtum forms seeds asexually by apomixis. During ovule development, sexual reproduction initiates with megaspore mother cell entry into meiosis…”
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The LOSS OF APOMEIOSIS (LOA) locus in Hieracium praealtum can function independently of the associated large-scale repetitive chromosomal structure by Kotani, Yoshiko, Henderson, Steven T., Suzuki, Go, Johnson, Susan D., Okada, Takashi, Siddons, Hayley, Mukai, Yasuhiko, Koltunow, Anna M. G.

“…Apomixis or asexual seed formation in Hieracium praealtum (Asteraceae) is controlled by two independent dominant loci. One of these, the LOSS OF APOMEIOSIS…”
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Traffic monitors at the cell periphery: the role of cell walls during early female reproductive cell differentiation in plants by Tucker, Matthew R, Koltunow, Anna MG

“…•Female reproductive precursor cell fate is controlled by multiple somatic signals.•Cell wall bound arabinogalactan proteins determine female reproductive…”
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Generation of an integrated Hieracium genomic and transcriptomic resource enables exploration of small RNA pathways during apomixis initiation by Rabiger, David S, Taylor, Jennifer M, Spriggs, Andrew, Hand, Melanie L, Henderson, Steven T, Johnson, Susan D, Oelkers, Karsten, Hrmova, Maria, Saito, Keisuke, Suzuki, Go, Mukai, Yasuhiko, Carroll, Bernard J, Koltunow, Anna M G

“…Application of apomixis, or asexual seed formation, in crop breeding would allow rapid fixation of complex traits, economizing improved crop delivery…”
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KNUCKLES (KNU) encodes a C2H2 zinc-finger protein that regulates development of basal pattern elements of the Arabidopsis gynoecium by Payne, Thomas, Johnson, Susan D, Koltunow, Anna M

“…Flowers of the parthenocarpic knuckles mutant are conditionally male sterile and contain ectopic stamens and carpels that originate from placental tissue…”
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Unequal contribution of two paralogous CENH3 variants in cowpea centromere function by Ishii, Takayoshi, Juranić, Martina, Maheshwari, Shamoni, Bustamante, Fernanda de Oliveira, Vogt, Maximilian, Salinas-Gamboa, Rigel, Dreissig, Steven, Gursanscky, Nial, How, Tracy, Demidov, Dmitri, Fuchs, Joerg, Schubert, Veit, Spriggs, Andrew, Vielle-Calzada, Jean-Philippe, Comai, Luca, Koltunow, Anna M. G., Houben, Andreas

“…In most diploids the centromere-specific histone H3 (CENH3), the assembly site of active centromeres, is encoded by a single copy gene. Persistance of two…”
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Genetic separation of autonomous endosperm formation (AutE) from the two other components of apomixis in Hieracium by Ogawa, Daisuke, Johnson, Susan D, Henderson, Steven T, Koltunow, Anna M. G

“…In apomictic Hieracium subgenus Pilosella species, embryo sacs develop in ovules without meiosis. Embryo and endosperm formation then occur without…”
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New observations on gametogenic development and reproductive experimental tools to support seed yield improvement in cowpea [Vigna unguiculata (L.) Walp.] by Salinas-Gamboa, Rigel, Johnson, Susan D., Sánchez-León, Nidia, Koltunow, Anna M. G., Vielle-Calzada, Jean-Philippe

“…Key message Cowpea reproductive tools. Vigna unguiculata L. Walp. (cowpea) is recognized as a major legume food crop in Africa, but seed yields remain low in…”
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Sexual and Apomictic Reproduction in Hieracium Subgenus Pilosella Are Closely Interrelated Developmental Pathways by Tucker, Matthew R., Araujo, Ana-Claudia G., Paech, Nicholas A., Hecht, Valerie, Ed D. L. Schmidt, Rossell, Jan-Bart, de Vries, Sacco C., Anna M. G. Koltunow

“…Seed formation in flowering plants requires meiosis of the megaspore mother cell (MMC) inside the ovule, selection of a megaspore that undergoes mitosis to…”
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Molecular Cloning and Characterization of a Linalool Synthase from Lemon Myrtle by SUGIURA, Mizue, ITO, Sohei, SAITO, Yosuke, NIWA, Yasuo, KOLTUNOW, Anna M., SUGIMOTO, Osamu, SAKAI, Hiroshi

“…Using a homology-based PCR strategy, we identified a cDNA with sequence similarity to linalool synthase from lemon myrtle. Functional expression of the cDNA…”
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Genetic analysis of growth-regulator-induced parthenocarpy in Arabidopsis by Vivian-Smith, A, Koltunow, A.M

“…In Arabidopsis, seedless silique development or parthenocarpy can be induced by the application of various plant growth regulators (PGRs) to unfertilized…”
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A Genetic Screen for Impaired Systemic RNAi Highlights the Crucial Role of DICER-LIKE 2 by Taochy, Christelle, Gursanscky, Nial R., Cao, Jiangling, Fletcher, Stephen J., Dressel, Uwe, Mitter, Neena, Tucker, Matthew R., Koltunow, Anna M. G., Bowman, John L., Vaucheret, Hervé, Carroll, Bernard J.

“…Posttranscriptional gene silencing (PTGS) of transgenes involves abundant 21-nucleotide small interfering RNAs (siRNAs) and low-abundance 22-nucleotide siRNAs…”
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AUXIN RESPONSE FACTOR8 Is a Negative Regulator of Fruit Initiation in Arabidopsis by Goetz, Marc, Vivian-Smith, Adam, Johnson, Susan D, Koltunow, Anna M

“…Fruit and seed formation in plants is normally initiated after pollination and fertilization, and, in the absence of fertilization, flowers senesce. In the…”
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