Time of application of Niagara 10637 for induction of maleness or femaleness inRicinus communis Linn.

Varkey, Mary; Nigam, R. K.

doi:10.1007/bf02488542

Cited by 2 publications

(1 citation statement)

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“…In particular, the exogenous application of ethylene-releasing chemicals caused changes in sex expression or sex reversal in several species, such as cucurbits (Rudich et al 1969), Morus spp. (Jaiswal and Kumar 1980;Thomas 2004), Cannabis sativa (Mohan Ram and Sett 1982), and Ricinus communis (Varkey and Nigam 1982). Studies regarding its endogenous quantification and the differential expression of ethylene genes in different sex genotypes have been particularly conducted in Cucurbitaceae (Kahana et al 1999;Papadopoulou et al 2005;Saito et al 2007).…”

Section: Introductionmentioning

confidence: 97%

Generation of expressed sequence tags from carob (Ceratonia siliqua L.) flowers for gene identification and marker development

Caruso

Distefano

Zhu

et al. 2008

Tree Genetics & Genomes

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Carob (Ceratonia siliqua L.) is a caesalpinoid legume tree showing labile sex expression. With the main aims of identifying flower-expressed genes and of developing specific markers, 1,056 clones from a complementary DNA library of carob flowers were bidirectionally sequenced. A total of 1,377 high-quality expressed sequence tags were clustered into 1,096 unigenes. Basic Local Alignment Search Tool and Gene Ontology functional annotation allowed to identify several agronomically important genes, such as those involved in flower development and sexual reproduction, response to stress, galactomannan synthesis, and hormone pathways. Genes involved in the ethylene biosynthesis and response were quantified in developing flowers of three sex genotypes (male, female, and hermaphrodite) using quantitative reverse transcription polymerase chain reaction. The transcript levels of 1-aminocyclopropane-1-carboxylic acid oxidase, acting downstream in ethylene pathway, and Ethylene Insensitive 3 (EIN3)-like, a transcription factor involved in ethylene signaling, were directly correlated with maleness, indicating a possible role of ethylene in carob sex expression. Furthermore, the first set of carob genic microsatellites was developed, which might be useful for genotyping and genetic diversity analysis.

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