scholarly journals GENE EXPRESSION PATTERNS OF PECAN ZYGOTIC AND SOMATIC EMBRYOS DURING MATURATION AND GERMINATION

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1131b-1131
Author(s):  
Amnon Levi ◽  
Hazel Y. Wetzstein ◽  
Glen A. Galau
Keyword(s):  
Gene Expression ◽  
Somatic Embryo ◽  
Somatic Embryos ◽  
Expression Patterns ◽  
Gene Expression Patterns ◽  
Zygotic Embryos ◽  
Carya Illinoensis ◽  
Maturation Stages ◽  
Somatic Embryo Conversion ◽  
Late Maturation

The coordinate expression of mRNA classes in pecan (Carya illinoensis) zygotic and somatic embryos has been studied. MRNA was isolated from zygotic embryos at early and late maturation stages (12 to 22 weeks post-pollination) and during germination. Additionally, mRNA was isolated from somatic embryos derived from a repetitive embryogenic system prior and after cold (6 weeks at 4°C) and desiccation treatments (5 days). These treatments have been determined to enhance somatic embryo conversion. The abundance of embryogenic mRNA classes was determined using various cloned cotton mRNA probes (Hughes and Galau, 1989). This study is a part of our efforts to elucidate the developmental and physiological differences between zygotic and somatic embryo systems in pecan.

scholarly journals GENE EXPRESSION IN PECAN SOMATIC EMBRYOS

HortScience ◽  
1991 ◽  
Vol 26 (6) ◽  
pp. 726A-726 ◽  
Author(s):  
Amnon Levi ◽  
Hazel Y. Wetzstein ◽  
Glen A. Galau
Keyword(s):  
Gene Expression ◽  
Somatic Embryos ◽  
Zygotic Embryo ◽  
Germination Rate ◽  
Expression Patterns ◽  
Gene Expression Patterns ◽  
Zygotic Embryos ◽  
Embryo Germination ◽  
Coordinate Gene Expression ◽  
Somatic Embryogenic

Repetitive somatic embryogenic lines of pecan (Carya illinoensis) were obtained and subcultured on basal WPM, following a one week induction of zygotic embryo tissue on modified WPM with 6 mg/L NAA. Gene expression of somatic embryos has been studied and compared with that occurring in zygotic embryos. Somatic embryos simultaneously expressed mRNA classes that are specific to each of the zygotic embryo cotyledon (Cot), maturation (Mat), and post abscission stages (Late embryogenesis, Lea). Somatic embryos exhibiting such multiple, nonregulated gene expression patterns have a low germination rate. Treatments found to enhance embryo germination (cold and desiccation) may be effective in part, by modifying gene expression patterns. Some of the Cot and Mat mRNA classes decreased following such treatments, while Lea mRNAs were not effected. Cold and desiccation treatments appear to coordinate gene expression in pecan somatic embryos, which might be associated with embryo germination.

Gene Expression Patterns During Somatic Embryo Development and Germination in Maize Hi II Callus Cultures

2006 ◽  
Vol 62 (1-2) ◽  
pp. 1-14 ◽  
Author(s):  
Ping Che ◽  
Tanzy M. Love ◽  
Bronwyn R. Frame ◽  
Kan Wang ◽  
Alicia L. Carriquiry ◽  
...  
Keyword(s):  
Gene Expression ◽  
Somatic Embryo ◽  
Embryo Development ◽  
Expression Patterns ◽  
Callus Cultures ◽  
Gene Expression Patterns ◽  
Somatic Embryo Development

scholarly journals Gene expression patterns, and uptake and fate of fed ABA in white spruce somatic embryo tissues2

1997 ◽  
Vol 48 (2) ◽  
pp. 277-287 ◽  
Author(s):  
Jin-Zhuo Dong ◽  
Michel R. Perras ◽  
Suzanne R. Abrams ◽  
David I. Dunstan
Keyword(s):  
Gene Expression ◽  
Somatic Embryo ◽  
Expression Patterns ◽  
White Spruce ◽  
Gene Expression Patterns

Gene expression patterns in blood predict future severe endpoints in community acquired pneumonia

Pneumologie ◽  
2018 ◽  
Vol 72 (S 01) ◽  
pp. S8-S9
Author(s):  
M Bauer ◽  
H Kirsten ◽  
E Grunow ◽  
P Ahnert ◽  
M Kiehntopf ◽  
...  
Keyword(s):  
Gene Expression ◽  
Expression Patterns ◽  
Community Acquired Pneumonia ◽  
Gene Expression Patterns
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