The Relation of Achene Number to Berry Weight in Strawberry Fruit

Invertase (INV) may influence sugar levels and assimilate transport in strawberry fruit. Several groups, including our own, have only detected acid INV (optimum pH 4.6) in strawberry fruit, however, recently Hubbard et al. (Physiol. Plant. 82:191-196, 1991) reported the presence of a neutral INV (pH 7.5). Since dissimilar isolation protocols may have contributed to the different findings, we re-examined our work with developing `Brighton' strawberry using the extraction procedure of Hubbard et al. Neutral INV activity per gFW (pH 7.5-8.0) increased many fold as fruit developed from green to the red ripe stage. Acid INV activity decreased markedly from green-white to the red stage. In addition, when fruit extracts were precipitated with cold acetone, a pellet contained 60% of the acid INV activity, and a surface coagulation of protein contained 60% of the neutral INV activity. This allowed easy separation of these two enzymes. Extraction methodologies affect isolation of neutral INV activity from strawberry fruit.

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Sensing when the wall comes tumbling down

Journal of Experimental Botany ◽

10.1093/jxb/eraa436 ◽

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.

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Cultivation Conditions Change Aroma Volatiles of Strawberry Fruit

Horticulturae ◽

10.3390/horticulturae7040081 ◽

2021 ◽

Vol 7 (4) ◽

pp. 81

Author(s):

Yunduan Li ◽

Yuanyuan Zhang ◽

Xincheng Liu ◽

Yuwei Xiao ◽

Zuying Zhang ◽

...

Keyword(s):

Volatile Compounds ◽

Major Contributor ◽

Fragaria Ananassa ◽

Strawberry Fruit ◽

Cultivation Conditions ◽

Soil Culture ◽

Aroma Volatiles ◽

Ms Analysis ◽

Significant Difference ◽

Strawberry Cultivars

Volatile compounds principally contribute to flavor of strawberry (Fragaria × ananassa) fruit. Besides to genetics, cultivation conditions play an important role in fruit volatile formation. Compared to soil culture as control, effects of substrate culture on volatile compounds of two strawberry cultivars (‘Amaou’ and ‘Yuexin’) were investigated. GC-MS analysis revealed significant difference in volatile contents of ‘Amaou’ strawberry caused by substrate culture. No significant effect was observed for cultivar ‘Yuexin’. For ‘Amaou’ strawberry from soil culture produced higher volatile contents compared with substrate culture. This difference is contributed by high contents of esters, lactones, ketones, aldehydes, terpenes, hydrocarbons, acids, furans and phenols in ‘Amaou’ strawberry fruit from soil culture. Furanones, beta-linalool, trans-Nerolidol and esters are major contributor to strawberry aroma, whose contents are higher in soil culture planted fruit when compared to substrate culture. Moreover, strawberry fruit from soil culture had higher transcripts related to volatile biosynthesis were observed, including FaQR, FaOMT, FaNES1, FaSAAT and FaAAT2.

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Biocontrol ability and action mechanism of Bacillus halotolerans against Botrytis cinerea causing grey mould in postharvest strawberry fruit

Postharvest Biology and Technology ◽

10.1016/j.postharvbio.2020.111456 ◽

2021 ◽

Vol 174 ◽

pp. 111456

Author(s):

Fang Wang ◽

Jie Xiao ◽

Yunzeng Zhang ◽

Raoyong Li ◽

Li Liu ◽

...

Keyword(s):

Botrytis Cinerea ◽

Grey Mould ◽

Strawberry Fruit ◽

Action Mechanism

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Downregulation of RdDM during strawberry fruit ripening

Genome Biology ◽

10.1186/s13059-018-1587-x ◽

2018 ◽

Vol 19 (1) ◽

Cited By ~ 29

Author(s):

Jingfei Cheng ◽

Qingfeng Niu ◽

Bo Zhang ◽

Kunsong Chen ◽

Ruihua Yang ◽

...

Keyword(s):

Fruit Ripening ◽

Strawberry Fruit ◽

Strawberry Fruit Ripening

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Performance of Strawberry Varieties Developed for Perennial Matted-Row Production in Annual Plasticulture in a Cold Climate Region

Agronomy ◽

10.3390/agronomy11071407 ◽

2021 ◽

Vol 11 (7) ◽

pp. 1407

Author(s):

Courtney A. Weber

Keyword(s):

Large Scale ◽

Fruit Size ◽

Weather Conditions ◽

Cold Climate ◽

Annual Production ◽

High Yield ◽

Production Cycle ◽

Late Season ◽

Berry Weight ◽

High Yields

Annual plasticulture production of strawberries promises superior weed control, fruit quality and yields. However, strawberry varieties adapted for perennial, matted-row production and local markets in cold climate regions have not been widely tested for adaptation to an annual production cycle. Productivity of seven short-day varieties developed for matted-row and/or annual production was examined in an annual plasticulture system in two consecutive trials in central NY (lat. 42.87° N, long. 76.99° W) harvested in 2013 and 2014. ‘Flavorfest’ demonstrated good performance in Trial 1 with high yield (390 g/plant) and large fruit size (13.9 g mean berry weight). ‘Jewel’ was shown to be well adapted to the annual plasticulture system with consistently high yields (330 and 390 g/plant) that equaled or surpassed other varieties and had moderate fruit size. ‘Chandler’ performed similarly to previous trials conducted in warmer regions with yield (340 g/plant) and fruit size (9.8 g mean berry weight) similar to ‘Jewel’. ‘Clancy’ yielded less but was consistent from year to year. The late season varieties Seneca and Ovation showed marked variability between years, possibly due to drastically different temperatures during flowering and fruit development in Trial 1 compared to Trial 2. High temperatures in Trial 1 likely caused higher early fruit yield, a compressed season and a precipitous decline in fruit size in the later season, thus reducing yield in the late season. Survival after a second dormant period was poor resulting in a small second harvest and reduced fruit size. Overall, the system demonstrated many of the expected benefits but may be more sensitive to weather conditions in the region. While many varieties developed for matted-row production may work well in an annual plasticulture system, not all varieties are equally adapted. Performance of each variety should be determined independently before large scale adoption by growers.

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