Atividade da peroxidase durante o período hibernal de plantas de pessegueiro (Prunus persica (L.) Batsch.) cv. jubileu com e sem sintomas da morte precoce

Marafon, Anderson Carlos; Herter, Flávio Gilberto; Bacarin, Marcos Antônio; Hawerroth, F. J.

doi:10.1590/s0100-29452009000400004

Cited by 7 publications

(8 citation statements)

References 12 publications

(7 reference statements)

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“…Plantas sintomáticas apresentam maior atividade de peroxidase nas gemas e nos ramos durante o inverno, além de maiores níveis populacionais de Mesocriconema xenoplax e Helicotylenchus spp. na rizosfera (MARAFON et al 2009).…”

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Propagação vegetativa de seleções de porta-enxertos potencialmente tolerantes à morte-precoce do pessegueiro

Mayer

Ueno

Neves

2018

Rev. Cienc. Agrovet.

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A morte-precoce do pessegueiro é uma síndrome cuja causa envolve diversos agentes bióticos e abióticos e, para reduzir os prejuízos, a principal linha de pesquisa tem sido a busca por porta-enxertos tolerantes. Dentre as características desejáveis em um bom porta-enxerto, a facilidade de propagação vegetativa é fundamental para preservação da identidade genética e facilitar a difusão de tecnologias. O objetivo, com o presente trabalho, foi avaliar a viabilidade técnica da propagação vegetativa por estacas herbáceas de 18 seleções clonais de porta-enxertos [Prunus persica (L.) Batsch.] potencialmente tolerantes à morte-precoce, sob câmara de nebulização intermitente. Como cultivares de referência, foram utilizadas 'Capdeboscq', 'Okinawa' (P. persica) e 'Sharpe' ['Chickasaw' (Prunus angustifolia Marsh.) x Prunus spp.]. Com as avaliações realizadas após 65 dias da estaquia, foi possível concluir que a propagação das seleções de porta-enxertos por estacas herbáceas é tecnicamente viável, com porcentagens de enraizamento que variaram de 21,67% a 91,67%, de tal forma que nenhum desses genótipos deve ser descartado do processo de seleção. A qualidade das raízes adventícias formadas foi satisfatória na maioria dos genótipos estudados, com elevadas porcentagens de estacas aptas ao transplantio, satisfatório número e comprimento de raízes. Entretanto, a seleção WFM-ESM-07-04 e as cultivares Capdeboscq e Sharpe se destacaram positivamente nesse aspecto. Dentre os três portaenxertos de referência utilizados, 'Okinawa' e 'Capdeboscq' apresentaram capacidade propagativa (rendimento) por estacas herbáceas bastante similar entre si, porém ambos são melhores do que 'Sharpe'.

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Propagação vegetativa de seleções de porta-enxertos potencialmente tolerantes à morte-precoce do pessegueiro

Mayer

Ueno

Neves

2018

Rev. Cienc. Agrovet.

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“…The highest peroxidase activity observed in early autumn leaves, in most combinations, may be justified by the fact that catalases and peroxidases increase in the early stages of cold acclimatization involved in the removal of H 2 O 2 produced during the reactions of synthesis of proteins, organelles and ATP (MARAFON et al, 2009), and also because peroxidase can be regulated by day length, which is shorter in colder seasons (FERNÁNDEZ-PÉREZ et al, 2015). Higher peroxidase activity was observed in the trunk bark during dormancy, influencing metabolic reactions and physiological processes in plant tissues (MARAFON et al, 2009;TELLES et al, 2009;ZARROUK et al, 2010). Therefore, elevation detected in leaves at the end of the vegetative cycle indicates changes in peroxidase activity also in the trunk of graft combinations analyzed.…”

Section: Resultsmentioning

confidence: 99%

Peroxidase activity and initial growth of ‘Barbosa’ peach on clonal rootstocks

et al. 2019

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In the peach nursery trees production, the use of rootstocks with unknown genetic identity obtained from peach seeds in the canning industry is frequent. The hypothesis tested was that there are rootstocks that express greater graft compatibility, enabling greater survival and growth, and that peroxidase activity can be used as indication of graft incompatibility. The aim of this study was to evaluate the survival and the peroxidase activity efficiency in identifying graft incompatibility and the trunk diameter growth of ‘Barbosa’ peach grafted onto 18 Prunus clonal rootstocks, propagated by herbaceous cuttings, compared to own-rooted scion trees. The experimental design was three randomized blocks, with one tree per plot. The first three vegetative cycles of trees conducted in double Y (5.0m x 2.0m) without irrigation were evaluated. The highest trunk diameter growth was provided by ‘Okinawa’, ‘Tsukuba-1’, ‘Tsukuba-2’, Mexico F1 and ‘Flordaguard’ rootstocks, without differing from own-rooted ‘Barbosa’ peach. Peroxidase activity differs by rootstock effect at the beginning of the dormancy period, and is higher than in vegetative growth, especially in interspecific graft combinations. Peroxidase activity is a biochemical indicator of stress, but should not be used alone and generalized to characterize graft incompatibility.

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“…Prior studies are mostly carried out to examine the peach cytology, biochemistry, morphology, genetics, and physiology, together with the cold resistance mechanisms (Howell et , 1997;Marafon et al, 2009;Nilo-Poyanco et al, 2019;Tareen et al, 2017). The proteomic analyses of numerous plant species in response to cold have been well-investigated, such as grape , watermelon (Shi et al, 2019), winter turnip rape (Xu et al, 2018), wheat , cucumber (Fan et al, 2015), and Petunia (Zhang et al, 2016).…”

Section: German Society For Horticultural Sciencementioning

confidence: 99%

Quantitative proteomic analyses on the mechanisms of cold tolerance in two peach cultivars (Prunus persica L. Batsch) based on iTRAQ

Li¹,

ZhaoYuan²,

Tian³

et al. 2021

Europ.J.Hortic.Sci

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First, we have found that the cold-tolerant peach cultivar was related to carbon metabolism, starch as well as sucrose metabolism, and phenylpropanoid anhydrase, and harpin proteins play important roles in cold tolerance of the cold-tolerant peach cultivar. Third, ten candidate protein-encoding genes were validated in RNA level by real-time PCR. What is the expected impact on horticulture?• Cold resistance is the main characteristic of life activity in fruit trees, which directly affects the introduction and resistance breeding. Peach is an extensively distributed fruit plant worldwide, which resistance among various cultivars. Therefore, it is useful to examine the underlying mechanisms of cold resistance of peach, so as to breed the cultivars with enhanced cold tolerance, and to offer related proteomic information.

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Atividade da peroxidase durante o período hibernal de plantas de pessegueiro (Prunus persica (L.) Batsch.) cv. jubileu com e sem sintomas da morte precoce

Cited by 7 publications

References 12 publications

Propagação vegetativa de seleções de porta-enxertos potencialmente tolerantes à morte-precoce do pessegueiro

Propagação vegetativa de seleções de porta-enxertos potencialmente tolerantes à morte-precoce do pessegueiro

Peroxidase activity and initial growth of ‘Barbosa’ peach on clonal rootstocks

Quantitative proteomic analyses on the mechanisms of cold tolerance in two peach cultivars (Prunus persica L. Batsch) based on iTRAQ

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