Ethylene and fruit softening in the stony hard mutation in peach

2006 ◽  
Vol 41 (1) ◽  
pp. 16-21 ◽  
Author(s):  
Hiroko Hayama ◽  
Miho Tatsuki ◽  
Akiko Ito ◽  
Yoshiki Kashimura
Keyword(s):  
Fruit Softening ◽  
Stony Hard

scholarly journals Cell Wall Changes Associated with Normal and Mealy Fruit Softening for a Novel Peach Genotype

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 817B-817
Author(s):  
Niels O. Maness ◽  
Donna Chrz ◽  
Joseph C. Goffreda
Keyword(s):  
Cell Walls ◽  
Textural Properties ◽  
Molecular Size ◽  
Fruit Softening ◽  
Sugar Composition ◽  
Pectin Degradation ◽  
Peach Fruit ◽  
Time Period ◽  
Free Air ◽  
Stony Hard

The `Stony Hard' gene of peach conferred a unique ability to manipulate softening and textural properties of the fruit by controlling the concentration and duration of exposure to ethylene. Fruit ripened in ethylene-free air softened very slowly. Exposure of fruit to 1 ppm ethylene continuously for 48 h, or discontinuously at 100 ppm over the same time period, significantly accelerated softening—to a normal texture. Exposure of fruit to 100 ppm ethylene continuously for 48 h induced softening to the same level, but to a mealy texture. We have prepared cell walls and conducted sequential chemical extractions from fruit exposed to the ethylene treatments above. Galacturonic acid content of chelator soluble pectin fractions decreased for mealy fruit, compared to fruit with normal texture, indicating that selective pectin degradation was associated with mealiness. Other differences in polysaccharide sugar composition and apparent molecular size associated with slow, accelerated, and abnormal softening in peach fruit will be addressed.

Effects of Defoliation and Foliar Application of Gibberellic Acid on Fruit Softening after Alcohol Treatment of Japanese Persimmon 'Hiratanenashi'.

1994 ◽  
Vol 62 (4) ◽  
pp. 867-875 ◽  
Author(s):  
Hiroyuki Itamura ◽  
Tadaaki Fukushima ◽  
Toshio Kitamura ◽  
Hisashi Harada ◽  
Satoshi Taira ◽  
...  
Keyword(s):  
Gibberellic Acid ◽  
Foliar Application ◽  
Alcohol Treatment ◽  
Fruit Softening ◽  
Japanese Persimmon

scholarly journals Sensing when the wall comes tumbling down

2020 ◽  
Vol 71 (22) ◽  
pp. 6865-6868
Author(s):  
David A Brummell
Keyword(s):  
Fruit Softening ◽  
Strawberry Fruit ◽  
Experimental Botany

This article comments on: Paniagua C, Ric-Varas P, Garcia-Gago JA, López-Casado G, Blanco-Portales R, Muñoz-Blanco J, Schückel J, Knox JP, Matas AJ, Quesada MA, Posé S, Mercado JA. 2020. Elucidating the role of polygalacturonase genes in strawberry fruit softening. Journal of Experimental Botany 71, 7103–7117.

scholarly journals Large Right Atrial Myxoma Masquerading as Malignancy

2021 ◽  
Author(s):  
Bharath V. ◽  
Milind Padmakar Hote
Keyword(s):  
Right Heart Failure ◽  
Large Mass ◽  
Atrial Myxoma ◽  
Right Atrial ◽  
Free Wall ◽  
Right Heart ◽  
Rare Presentation ◽  
Right Atrial Myxoma ◽  
Hard Consistency ◽  
Stony Hard

AbstractA 57-year-old female presented to emergency with features of right heart failure. On evaluation, she was found to have a large mass occupying right atrium (RA) completely and protruding into right ventricle through tricuspid valve. Intraoperatively, mass was seen arising from RA free wall with stony hard consistency. Histopathology revealed it to be myxoma. We present this case for the rare presentation of myxoma masquerading as malignancy.

scholarly journals Insights into transcriptional regulation of  -D-N-acetylhexosaminidase, an N-glycan-processing enzyme involved in ripening-associated fruit softening

2014 ◽  
Vol 65 (20) ◽  
pp. 5835-5848 ◽  
Author(s):  
M. Irfan ◽  
S. Ghosh ◽  
V. Kumar ◽  
N. Chakraborty ◽  
S. Chakraborty ◽  
...  
Keyword(s):  
Transcriptional Regulation ◽  
Fruit Softening ◽  
Processing Enzyme

scholarly journals Characterization and Transcript Profiling of PME and PMEI Gene Families during Peach Fruit Maturation

2017 ◽  
Vol 142 (4) ◽  
pp. 246-259 ◽  
Author(s):  
Yunqing Zhu ◽  
Wenfang Zeng ◽  
Xiaobei Wang ◽  
Lei Pan ◽  
Liang Niu ◽  
...  
Keyword(s):  
Fruit Ripening ◽  
Prunus Persica ◽  
Expression Patterns ◽  
Pectin Methylesterase ◽  
Gene Families ◽  
Naphthaleneacetic Acid ◽  
Regulation Mechanism ◽  
Fruit Softening ◽  
Peach Fruit

Pectins are synthesized and secreted to the cell wall as highly methyl-esterified polymers and demethyl-esterified by pectin methylesterases (PMEs), which are regulated by pectin methylesterase inhibitors (PMEIs). PMEs and PMEIs are involved in pectin degradation during fruit softening; however, the roles of the PME and PMEI gene families during fruit softening remain unclear. Here, 71 PME and 30 PMEI genes were identified in the peach (Prunus persica) genome and shown to be unevenly distributed on all eight chromosomes. The 71 PME genes comprised 36 Type-1 PMEs and 35 Type-2 PMEs. Transcriptome analysis showed that 11 PME and 15 PMEI genes were expressed during fruit ripening in melting flesh (MF) and stony-hard (SH) peaches. Three PME and five PMEI genes were expressed at higher levels in MF than in SH fruit and exhibited softening-associated expression patterns. Upstream regulatory cis elements of these genes related to hormone response, especially naphthaleneacetic acid and ethylene, were investigated. One PME (Prupe.7G192800) and two PMEIs (Prupe.1G114500 and Prupe.2G279800), and their promoters were identified as potential targets for future studies on the biochemical metabolism and regulation of fruit ripening. The comprehensive data generated in this study will improve our understanding of the PME and PMEI gene families in peach. However, further detailed investigation is necessary to elucidate the biochemical function and regulation mechanism of the PME and PMEI genes during peach fruit ripening.

Fruit softening correlates with enzymatic and compositional changes in fruit cell wall during ripening in ‘Bluecrop’ highbush blueberries

2019 ◽  
Vol 245 ◽  
pp. 163-170 ◽  
Author(s):  
Sinath Chea ◽  
Duk Jun Yu ◽  
Junhyung Park ◽  
Hee Duk Oh ◽  
Sun Woo Chung ◽  
...  
Keyword(s):  
Cell Wall ◽  
Fruit Softening ◽  
Compositional Changes ◽  
Highbush Blueberries
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