Seasonal changes in the abscission site in bunch tomatoes and differential response to 1-methylcyclopropene

Lichter, Amnon; Guzev, Ludmila; Dvir, Orit; Farber, Inon; Danshin, A.; Pressman, E.; Ganz, Shelly; Beno-Moualem, Delila

doi:10.1016/j.postharvbio.2005.12.002

Cited by 9 publications

(14 citation statements)

References 20 publications

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“…The interface between the pedicel and the fruit contains a shunt that presents additional surface area for local dehydration, and provides space that allows the fruit to turn in relation to the axis of the stem and thereby break it. The effect of humidity on ‘receptacle abscission’ during storage probably acts through a similar mechanism to that of the phenomenon of AR observed during summer harvests of BCTs 1. The consistent findings of the present study and of further experiments performed subsequently show that in winter‐harvested bunches the major type of abscission during storage under low WVPD (high RH) is of the joint type whereas in summer‐harvested bunches the major pattern is of receptacle abscission during storage.…”

Section: Discussionsupporting

confidence: 85%

“…R‐819. In subsequent studies, we showed that the response to 1‐MCP changed during the harvest season and that abscission after storage changed from AJ in the winter‐harvested bunches to AR in the summer‐harvested ones 1. It was also suggested that the site of abscission after storage changed from AJ to AR in response to preharvest heat stress.…”

Section: Introductionmentioning

confidence: 93%

“…Bunch cherry tomatoes (BCTs) are a complex product, comprising fruits at several different ripening stages, a central stem, peduncles and sepals. In addition to this complexity, the bunch exhibits abscission at two sites: abscission from the joint (AJ) located in the middle of the peduncle, and abscission from the receptacle (AR) 1. The receptacle is the tip of the peduncle that is attached to the fruit stem scar.…”

Section: Introductionmentioning

confidence: 99%

“…Under these conditions, the fruits themselves can have a shelf life of 3–4 weeks. However, abscission from the bunch can limit the shelf life as BCTs, depending on the cultivar, the harvesting season and stress conditions during fruit development 1…”

Section: Introductionmentioning

confidence: 99%

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Low humidity after harvest changes the abscission site in bunch cherry tomatoes

et al. 2009

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BACKGROUND: In bunch cherry tomatoes (BCTs) abscission of the fruit from the bunch, rather than deterioration of fruit determines the life-span of the produce. Two abscission sites have been characterised: the joint (AJ) in the middle of the pedicel, and at the receptacle (AR) at the fruit-pedicel interphase. The type of abscission is sensitive to growth conditions; joint abscission is typical of winter harvests whereas receptacle abscission is dominant in summer harvests. The aim of the present study was to determine the effect of relative humidity (RH) in terms of water vapour pressure deficit (WVPD) during storage and shelf life on the course and site of abscission of BCTs.

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Section: Discussionsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Low humidity after harvest changes the abscission site in bunch cherry tomatoes

et al. 2009

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“…The fruit abscission zone (AZ) can differ according to internal conditions such as cultivar, fruit maturation, and carbohydrate content (Castillio-Llanque and Rapoport, 2009;Iglesias et al, 2006;Taghizadeh et al, 2009). Agricultural practices such as branch girdling (Murayama et al, 2006), thinning (Zibordi et al, 2009), and harvest period (Lichter et al, 2006) also affect the formation of AZ.…”

Section: Research Reportmentioning

confidence: 99%

Anatomical and histological changes in the fruit abscission zone of water dropwort (Oenanthe stolonifera DC.)

Lee

2011

Hortic. Environ. Biotechnol.

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Our goal was to investigate fruit abscission in Oenanthe stolonifera DC. by studying the morphological and cytological changes in the abscission zone. One abscission zone existed at the junction between the fruit and the pedicel. The region was clearly distinguishable 10 days after anthesis onwards and consisted of 3 to 5 layers of cells that formed a small, closely packed shape. Cells in the abscission layer began to flatten as the fruit developed. At the beginning of cell separation, cells in the middle area returned to a round shape and adjacent pedicel parenchyma cells enlarged. As abscission began, the cell wall dissolved from the middle lamella. Cell separation gradually extended toward the periphery from the middle area and, eventually, a distinct separation layer was formed. As the process proceeded, abscission zone cells developed large vacuoles and the organelles lost their shape. However, in explants treated with cycloheximide, the cell wall separated from the membrane and a whorled membrane was observed. This finding suggests that structural changes in the cell membrane may help explain the control of fruit abscission in O. stolonifera.

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