scholarly journals Exogenous glutamine increases lipid accumulation in developing seeds of castor bean (Ricinus communis L.) cultured in vitro

2015 ◽  
Vol 67 (4) ◽  
pp. 1137-1149 ◽  
Author(s):  
Yang Zhang ◽  
Sujatha Mulpuri ◽  
Aizhong Liu
Keyword(s):  
Castor Bean ◽  
Seed Quality ◽  
Ricinus Communis ◽  
Developing Seeds ◽  
Ricinus Communis L ◽  
Storage Products ◽  
Response To Change ◽  
Castor Seeds ◽  
Early Developmental

This report describes biomass production and compositional changes of developing castor seeds in response to change in the nitrogen resource (glutamine) of the medium. During the early developmental period (24-36 days after pollination), oil was found to initially accumulate in the developing seeds. Carbohydrates and oil were inversely related after glutamine provision (35 mM, in the culture medium). [U-14C] sucrose labeling was used to investigate the effect of metabolic fluxes among different storage materials. Addition of glutamine led to a 7% increase of labeling in lipids and an inverse decrease of labeling in carbohydrates. It was postulated that changes in the glutamine concentration in the medium are likely to influence the partitioning of resources between the various storage products, especially carbohydrates and oil. These observations will contribute to a better understanding of assimilate partitioning in developing castor seeds and the development of molecular strategies to improve castor bean seed quality and plant breeding studies.

scholarly journals In vitro establishment of a highly effective method of castor bean (Ricinus communis L.) regeneration using shoot explants

2016 ◽  
Vol 15 (6) ◽  
pp. 1417-1422 ◽  
Author(s):  
Ji-xing ZHANG ◽  
Xiao-yu WANG ◽  
Zi-zhou FENG ◽  
Xue-jun GENG ◽  
Sha-moli MU ◽  
...  
Keyword(s):  
Castor Bean ◽  
Ricinus Communis ◽  
Ricinus Communis L ◽  
Highly Effective ◽  
In Vitro Establishment

Mycoparasitism of selected sclerotia-forming fungi by Sporidesmium sclerotivorum

1998 ◽  
Vol 76 (3) ◽  
pp. 460-466 ◽  
Author(s):  
Sue Mischke
Keyword(s):  
Castor Bean ◽  
Ricinus Communis ◽  
Gray Mold ◽  
Causal Agent ◽  
Sclerotium Cepivorum ◽  
Ricinus Communis L ◽  
The Family ◽  
Host Parasite

Sporidesmium sclerotivorum Uecker, Ayers, & Adams is mycoparasite of sclerotia with potential for biocontrol. Sclerotia of fungi in the sclerotial lineage of the Sclerotiniaceae, including species of Sclerotinia, Botrytis, Amphobotrys, and Monilinia, stimulated germination of macroconidia of Sp. sclerotivorum. The mycoparasite readily colonized sclerotia of Sclerotinia spp. and Amphobotrys ricini (Buchwald) Hennebert both in soil and in vitro. Sclerotia of Botrytis spp. were parasitized only occasionally, and some Sclerotiniaceae were not parasitized. The limits on the ability of Sp. sclerotivorum to parasitize sclerotia support its classification as fastidious. Not even the first step in mycoparasitism, germination of Sp. sclerotivorum macroconidia, was triggered by sclerotia of fungi outside of the family. Amphobotrys ricini, the causal agent of gray mold of castor bean (Ricinus communis L.), is a newly recognized host of Sp. sclerotivorum, and sclerotia of this pathogen were destructively colonized by the mycoparasite.Key words: Amphobotrys ricini, biocontrol, host-parasite interaction, Sclerotiniaceae, Sclerotium cepivorum, signal.

Accumulation and distribution of copper in castor bean (Ricinus communis L.) callus cultures: in vitro

2016 ◽  
Vol 128 (1) ◽  
pp. 177-186 ◽  
Author(s):  
Guoyong Huang ◽  
Yong Jin ◽  
Jin Zheng ◽  
Wei Kang ◽  
Hongqing Hu ◽  
...  
Keyword(s):  
Castor Bean ◽  
Ricinus Communis ◽  
Callus Cultures ◽  
Ricinus Communis L

scholarly journals Differential expression patterns of lipid genes in developing seeds of castor bean (Ricinus communis L.)

2014 ◽  
Vol 43 (1) ◽  
pp. 37-43 ◽  
Author(s):  
Umashankar Chandrasekaran ◽  
Aizhong Liu
Keyword(s):  
Fatty Acid ◽  
Lipid Accumulation ◽  
Castor Bean ◽  
Fatty Acid Biosynthesis ◽  
Ricinus Communis ◽  
Expression Patterns ◽  
Temporal Expression ◽  
Developing Seeds ◽  
Ricinus Communis L

Castor bean (Ricinus communis L.) is one of the most important non-edible oilseed crops. Characterization of seed development and lipid accumulation from female flowers pollinated to mature seeds has been carried out. The temporal expression patterns of 65 lipid genes involved in fatty acid and triacylglycerol biosynthesis using the semi-quantitative RT-PCR technique were also investigated. The 65 genes displayed diverse expression patterns which could be collectively grouped into seven groups (I - VII). Four gene groups (I, II, III and V) covering 40 lipid genes presented up-regulated expression patterns, correlating with the rapid lipid accumulation within developing seeds. The present study provides an extended glimpse of the expression patterns of lipid genes involved in fatty acid biosynthesis and triacylglycerol assembly in developing seeds of castor bean, which could serve in variety improvement of castor bean by genetic engineering approach. DOI: http://dx.doi.org/10.3329/bjb.v43i1.19743 Bangladesh J. Bot. 43(1): 37-43, 2014 (June)

scholarly journals An Optimized Protocol for In Vitro Indirect Shoot Organogenesis of Impala Bronzovaya and Zanzibar Green Ricinus communis L. Varieties

Horticulturae ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. 105
Author(s):  
Oleg S. Alexandrov ◽  
Nicolay R. Petrov ◽  
Natalia V. Varlamova ◽  
Marat R. Khaliluev
Keyword(s):  
Callus Induction ◽  
Castor Bean ◽  
Shoot Organogenesis ◽  
Culture Media ◽  
Ricinus Communis ◽  
Protein A ◽  
Condition Optimization ◽  
Ricinus Communis L ◽  
Optimized Protocol

The castor bean is an important industrial and ornamental crop. In the industry, it is used as a source of castor oil. Moreover, it has a large potential as a feed crop, because the seeds contain a high amount of protein. A main problem with castor bean use is the presence of toxins in the plants. Today, detoxification is carried out using various approaches, including biotechnological methods such as CRISPR/Cas9 technology. A successful application of these methods requires the availability of an efficient in vitro protocol for callus induction and shoot organogenesis. We present the results of in vitro condition optimization for two castor bean varieties (Impala Bronzovaya and Zanzibar Green). Eight different Murashige–Skoog (MS) culture media characterized by different plant growth regulator (PGR) combinations, as well as explant types (hypocotyls, cotyledonous leaves, and cotyledon petioles), were tested. The highest frequency of shoot organogenesis and average number per explant were observed during the cultivation of cotyledon petioles in both varieties on the Murashige and Skoog culture medium (MS) containing 1 or 2 mg/L of zeatin in combination with 0.1 mg/L of 3-indoleacetic acid (IAA). An optimized protocol for in vitro callus induction and shoot organogenesis may be used for biotechnological applications to obtain toxin-free castor bean, as well as Ricinus communis L. plants, with new ornamental traits and their combinations.

scholarly journals Life history of Neoseiulus californicus (McGregor, 1954) (Acari: Phytoseiidae) fed with castor bean (Ricinus communisL.) pollen in laboratory conditions

2014 ◽  
Vol 74 (3) ◽  
pp. 691-697 ◽  
Author(s):  
PP Marafeli ◽  
PR Reis ◽  
EC. da Silveira ◽  
GC Souza-Pimentel ◽  
MA. de Toledo
Keyword(s):  
Life History ◽  
Castor Bean ◽  
Ricinus Communis ◽  
Intrinsic Rate ◽  
Predatory Mite ◽  
Neoseiulus Californicus ◽  
Intrinsic Rate Of Increase ◽  
Ricinus Communis L ◽  
Rate Of Increase ◽  
History Of

The predatory mite, Neoseiulus californicus(McGregor, 1954) (Acari: Phytoseiidae) is one of the principal natural enemies of tetranychid mites in several countries, promoting efficient control of those mites in several food and ornamental crops. Pest attacks such as that of the spider mite, Tetranychus urticaeKoch, 1836 (Acari: Tetranychidae), is one of the problems faced by farmers, especially in the greenhouse, due to the difficulty of its control with the use of chemicals because of the development of fast resistance making it hard to control it. The objective of this work was to study the life history of the predatory mite N. californicus as a contribution to its mass laboratory rearing, having castor bean plant [Ricinus communis L. (Euphorbiaceae)] pollen as food, for its subsequent use as a natural enemy of T. urticae on a cultivation of greenhouse rosebushes. The studies were carried out in the laboratory, at 25 ± 2°C of temperature, 70 ± 10% RH and a 14 hour photophase. The biological aspects and the fertility life table were appraised. Longevity of 32.9 days was verified for adult females and 40.4 days for males. The intrinsic rate of increase (rm) was 0.2 and the mean generation time (T) was 17.2 days. The population doubled every 4.1 days. The results obtained were similar to those in which the predatory mite N. californicus fed on T. urticae.

Sign in / Sign up

Export Citation Format

Share Document