From pollination to fertilization in fruit trees

Herrero, M.

doi:10.1007/bf00024429

Cited by 70 publications

(37 citation statements)

References 48 publications

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“…Pollination-induced transmitting tissue cell deterioration and death thus provide a transmitting tract biochemically more enriched and spatially more accommodating for pollen tube growth. It has also been postulated that death of the transmitting tissue after pollination prevents entrance of other materials, for example, pathogens, into the ovary, thus protecting fertilization, fruit and seed development (Herrero, 1992). Therefore, it is appropriate to consider the pollinationinduced transmitting tissue cell death as a programmed process.…”

Section: Pollination-induced Transmitting Tissue Cell Deterioration Imentioning

confidence: 99%

“…Pollen tubes eventually reach the ovary, each of them enters an ovule to deposit the male gametes into the embryo sac for fertilization (Cheung, 1995;Knox, 1984;Mascarenhas, 1993). Pollination induces many physiological and developmental responses within the flower, including ethylene evolution, stylar and perianth senescence, and changes in the nectary, ovary and ovules (Halvey, 1986;Herrero, 1992;Larsen et al, 1993;Stead, 1992;Zhang and O'Neill, 1993). Pollination also causes dramatic cellular and biochemical responses in the pistil, leading to deterioration and death in specific cell types (Cresti et al, 1986;Herrero and Dickinson, 1979;Fisher, 1968, 1969).…”

Section: Introductionmentioning

confidence: 99%

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Pollination induces mRNA poly(A) tail‐shortening and cell deterioration in flower transmitting tissue

Wang

Cheung³

1996

The Plant Journal

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SummaryPollination induces many physiological responses in the flower, including deterioration and death in specific pistil cell types. It is shown here that within the style of tobacco, pollination-induced cell deterioration was restricted to the transmitting tissue while the surrounding cortical tissue was not affected. It was distinct from general senescence since exogenously applying the senescence-inducing hormone ethylene, or its precursor aminocyclopropane-1-carboxylic acid (ACC), to the flower or the pistil induced overall deterioration in the entire flower. Furthermore, both pollen tube growth and ethylene action were needed for the entire spectrum of cellular changes associated with this pollination-induced transmitting tissue deterioration process. It is also shown that pollination-induced mRNA poly(A) tail-shortening for at least three major classes of transmitting tissue-specific mRNAs. As is commonly observed for poly(A) tail-shortened mRNAs, the levels of two of these three mRNA classes decline after pollination. On the other hand, the third class of mRNAs, transmitting tissue-specific ('r'rs) mRNAs, was maintained at a very high level subsequent to pollination, even after substantial poly(A)-tail shortening. TTS mRNAs encode a pollen tube growth-promoting and -attracting protein needed for optimal in vivo pollen tube growth. The specific preservation of TTS mRNAs in the deteriorating transmitting tissue cells suggests that these cells can distinguish molecules needed in the pollinated styles from those that are dispensable, and protect them from degradation. It is suggested that the pollination-induced mRNA poly(A) tail-shortening and cell death are programmed processes suited to the post-pollination transmitting tissue environment. Results showing that ACC is a candidate signal molecule for the pollination-induced mRNA-shortening which is accentuated by ethylene and mediated via a protein phosphorylation-dependent signal transduction pathway are also presented.

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Section: Pollination-induced Transmitting Tissue Cell Deterioration Imentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pollination induces mRNA poly(A) tail‐shortening and cell deterioration in flower transmitting tissue

Wang

Cheung³

1996

The Plant Journal

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“…Following germination of the pollen grain on the stigma, a structure clearly adapted for the capture and the promotion of early development of the grain, the pollen tube grows first into the style and thence into the ovary. This phase of growth maintains the separation of the male and female gametes, and provides the opportunity for an extensive molecular conversation between the male and female protagonists (Knox 1984;Herrero 1992;Cheung & Wu 2001;Franklin-Tong 2002). Although much is now known of events in the style (Cheung 1996) the events in the ovary, before fertilization, remain largely unknown.…”

Section: Introductionmentioning

confidence: 99%

Male and female synchrony and the regulation of mating in flowering plants

Herrero

2003

Phil. Trans. R. Soc. Lond. B

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Successful mating clearly requires synchronous development of the male and female sexual organs. Evidence is accumulating that this synchrony of development also persists after pollination, with both pollen and pistil following complex, but highly integrated developmental pathways. The timing of the malefemale interaction is crucial for the pistil, which, far from being a mature passive structure, is engaged in a continuing programme of development: only being receptive to the advances of the pollen for a relatively short window of time. This developmental programme is most conspicuous in the ovary, and this review focuses on the interaction between the male and female tissues in this structure. The review first considers pollen tube development in the ovary, concentrating of the mechanisms by which its growth is modulated at various control points associated with structures within the ovary. Second, alterations to this 'normal' developmental programme are reviewed and considered in the context of a breakdown of developmental synchrony. Finally, the consequences of male-female developmental synchrony and asynchrony are explored. Clearly, a synchronous male-female relationship leads to a successful fertilization. However, lack of synchrony also occurs, and could emerge as a powerful tool to investigate the regulation of mating.

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“…Em fl ores de pessegueiro, o início da receptividade estigmática é mediado pela degeneração das papilas do estigma, concomitantemente com a produção de secreção (Herrero & Arbeloa, 1989). Esta secreção parece estar relacionada com os processos de reconhecimento e hidratação dos grãos de pólen (Herrero, 1992). O término da receptividade do estigma tem sido associado com a degeneração do estigma em damasqueiros (Egea & Burgos, 1992).…”

Section: Receptividade Do Estigmaunclassified

Reprodução do pessegueiro: efeito genético, ambiental e de manejo das plantas

2009

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RESUMO-Há uma grande carência de pesquisas e literatura no Brasil sobre a reprodução do pessegueiro. A presente revisão de literatura aborda e confronta inúmeros resultados de pesquisas acerca dos principais fatores envolvidos na reprodução dessa frutífera, com o intuito de subsidiar futuras pesquisas que visam ao melhor entendimento e/ou à solução de problemas associados à sua reprodução. Através da presente revisão, foi possível verifi car que o processo de fi xação de frutos se mostra complexo para algumas cultivares, sendo dependente da passagem, com êxito, por cada estádio fenológico. Com isso, a habilidade dos técnicos e produtores em integrar os fatores porta-enxerto, cultivar, ambiente e manejo das plantas é crucial para o sucesso no cultivo dessa espécie frutífera. Termos para indexação: reprodução, pessegueiro, genética, ambiente, manejo. PEACH REPRODUCTION: GENETIC, ENVIRONMENT, AND CULTURAL PRACTICES EFFECTABSTRACT -In Brazil there is a great lack of studies and literature about the peach reproduction. The present review discusses a lot of research results regarding the main factors involved in the reproduction of this species, and it has the intention to help future researches that aims to understand or to resolve the problems associated with the reproduction of the peach tree. By this review it was possible to verify that the process of fruit set is complex for some cultivars and highly dependent on each phenological stage. The ability of the professionals and producers to integrate the factors rootstocks, variety, environment and adequate cultural practices is very important for a successful peach tree production. Index terms: reproduction, peach, genetic, environment, cultural practices. INTRODUÇÃOO coefi ciente de herdabilidade para produtividade em pessegueiros é da ordem de 0,08 (Hansche, 1986), ou seja, de 8%. Este fator demonstra que o sucesso na frutifi cação e produção dessa espécie é dependente, sobretudo, das condições de manejo e de ambiente circundante do pomar. Assim sendo, a frutifi cação e a produção da maioria das plantas frutíferas temperadas, incluindo o pessegueiro, estão associadas, num primeiro momento, ao desenvolvimento adequado das gemas fl orais. Com isso, os manejos nutricional e fi tossanitário das plantas após a colheita, bem como condições ambientais adequadas para superação da dormência das plantas são fundamentais. Num segundo momento, condições meteorológicas favoráveis para a abertura das gemas, polinização e fecundação das fl ores são cruciais.Problemas de "fi xação" de frutos não são muito comuns em pessegueiros. De maneira geral, a frutifi cação é abundante, havendo necessidade de realização de raleio intenso, para promover o desenvolvimento satisfatório de um número adequado de frutos por planta, que é variável principalmente em função da idade, porte e do estado nutricional das plantas. Entretanto, nos últimos anos, algumas cultivares de pessegueiros, nectarineiras e ameixeiras vêm apresentando baixa frutifi cação e/ou irregularidade de produção, em distintos ...

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From pollination to fertilization in fruit trees

Cited by 70 publications

References 48 publications

Pollination induces mRNA poly(A) tail‐shortening and cell deterioration in flower transmitting tissue

Pollination induces mRNA poly(A) tail‐shortening and cell deterioration in flower transmitting tissue

Male and female synchrony and the regulation of mating in flowering plants

Reprodução do pessegueiro: efeito genético, ambiental e de manejo das plantas

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