Peroxidase from Strawberry Fruit (Fragaria ananassa Duch.): Partial Purification and Determination of Some Properties

1995 ◽  
Vol 43 (10) ◽  
pp. 2596-2601 ◽  
Author(s):  
Pedro Marcos Civello ◽  
Gustavo Adolfo Martinez ◽  
Alicia Raquel Chaves ◽  
Maria Cristina Anon
1997 ◽  
Vol 77 (1) ◽  
pp. 127-132 ◽  
Author(s):  
Fabien Robert ◽  
Gilles Pétel ◽  
Georgette Risser ◽  
Michel Gendraud

Early strawberry fruit production requires that non-dormant strawberry plants be covered during winter. Two methods were used to study the breaking of dormancy of Elsanta strawberry plants following chilling at temperatures below 8 °C. First, a morphological test using the petiole lengths of plants transferred from a nursery to a growth chamber was used. Second, the nucleotide contents before and after incubation of samples in an adenosine solution were measured by bioluminescence. The results show that these two methods can reveal changes in the growth potential of strawberry plants, and, therefore, the release from dormancy. Key words: Dormancy, strawberry plant, nucleotide, growth potential, Fragaria


Horticulturae ◽  
2021 ◽  
Vol 7 (4) ◽  
pp. 81
Author(s):  
Yunduan Li ◽  
Yuanyuan Zhang ◽  
Xincheng Liu ◽  
Yuwei Xiao ◽  
Zuying Zhang ◽  
...  

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.


1990 ◽  
Vol 10 (2) ◽  
pp. 131-139
Author(s):  
Oyewole Adeyemo ◽  
E. O. Okegbile ◽  
O. O. Olorunsogo

For the development of immunological contraception, attention is being concentrated on the possibility of using a sperm membrane antigen. Boar sperm membrane was extracted with triton-X 100 and fractionated by Sephadex G-150 column chromatography. The glycosylated and nonglycosylated portions of protein peaks from the gel filtration were obtained by fractionating on concanavalin A-Sepharose and eluting the bound protein with 0.3 M methyl mannoside. A glycosylated fraction was found to induce sperm agglutinating antibodies in rabbit. The partially purified protein has a molecular weight of 30 kilodaltons, as determined by sodium dodecyl polyaccyrlamide gel electrophoresis. Further work is planned on the histochemical determination of the origin of this protein and species cross-activity of the antibody.


2017 ◽  
Vol 504 ◽  
pp. 626-632 ◽  
Author(s):  
Ragu Sasikumar ◽  
Mani Govindasamy ◽  
Shen-Ming Chen ◽  
Yu Chieh-Liu ◽  
Palraj Ranganathan ◽  
...  

1994 ◽  
Vol 18 (4) ◽  
pp. 213-226 ◽  
Author(s):  
GUSTAVO ADOLFO MARTINEZ ◽  
PEDRO MARCOS CIVELLO ◽  
ALICIA RAQUEL CHAVES ◽  
MARÍA CRISTINA AÑÓN

1986 ◽  
Vol 66 (4) ◽  
pp. 1031-1032
Author(s):  
ADAM DALE ◽  
VICTORIA P. GRAY ◽  
C. L. RICKETSON

Governor Simcoe and Secord are two June-bearing strawberries (Fragaria × ananassa Duch.) released as fresh market berries. Both have very large firm fruit with good flavor. Both ripen mid-late season with Secord ripening slightly earlier than Governor Simcoe.Key words: Fragaria × ananassa Duch., strawberry, fruit breeding, cultivar description


2004 ◽  
Vol 67 (11) ◽  
pp. 1839-1841 ◽  
Author(s):  
Sachiko Tsukamoto ◽  
Kyoko Tomise ◽  
Maki Aburatani ◽  
Hiroyuki Onuki ◽  
Hiroshi Hirorta ◽  
...  

2021 ◽  
Vol 3 (27) ◽  
pp. 117-124
Author(s):  
A.S. Lyzhin ◽  
◽  
I.V. Luk'yanchuk ◽  

An important consumer trait of strawberry fruits is their aroma. Among the most important strawberry fruit aroma compounds are γ-decalactone and mesifurane. The content of γ-decalactone in fruits is controlled by the expression of the FaFAD1 gene. The content of mesifurane in fruits is controlled by the FaOMT gene. Identification of genotypes carrying the target alleles of the aromatic complex genes is an important stage in improving the strawberry assortment and creating strawberry varieties with aromatic fruits. The purpose of the study is molecular genetic analysis of strawberry hybrid seedlings by the FaOMT and FaFAD1 genes to identify genotypes promising in breeding for fruit aroma. Promising selected and elite forms of strawberry (Fragaria × ananassa Duch.) created at the FSSI “I.V. Michurin FSC” were used as biological objects. To identify the allelic state FaOMT gene, the codominant molecular marker FaOMT-SI/NO was used. To identify FaFAD1 gene, the molecular marker FaFAD1 was used. Using the FaOMT-SI/NO marker, the functional allele of the FaOMT gene (FaOMT+) was identified in the following strawberry selected forms: 298-19-9-43 (FB2 F. orientalis Los., F. moschata Duch., F. × ananassa Duch.), 932-29 (F. virginiana subsp. platypetala (Rydb.) Staudt × ‘Feyerverk’), 928-12 (298-19-9-43 × ‘Privlekatelnaya’), 69-29 (‘Feyerverk’× ‘Bylinnaya’), 72-25, 72-71 (‘Privlekatelnaya’ × ‘Bylinnaya’) and 26-5 (‘Rubinovyy kulon’× 298-19-9-43). The FaFAD1 gene was identified in strawberry hybrids 72-25 (‘Privlekatelnaya’ × ‘Bylinnaya’), 56-8 (‘Gigantella’ × ‘Privlekatelnaya’) and 61-12 (‘Bylinnaya’ × ‘Olimpiyskaya nadezhda’). The strawberry selected form 72-25 (‘Privlekatelnaya’ × ‘Bylinnaya’) is characterized by a combination of functional alleles of both genes (FaOMT + FaFAD1). Involvement of these forms in hybridization will make it possible to intensify the process of creating new strawberry varieties with improved fruit aroma.


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