scholarly journals Role of Ascorbic Acid in the Initiation and Growth of Helianthus annuus L. Callus under Salt Stress Conditions

2021 ◽  
Vol 30 (4) ◽  
pp. 1-18
Author(s):  
Shima Sultan ◽  
Sajida Abood
Keyword(s):  
Ascorbic Acid ◽  
Salt Stress ◽  
Helianthus Annuus ◽  
Stress Conditions ◽  
Helianthus Annuus L

Polyamines in Helianthus annuus L. during Germination under Salt Stress

1997 ◽  
Vol 16 (4) ◽  
pp. 205-211 ◽  
Author(s):  
M. P. Benavides ◽  
G. Aizencang ◽  
M. L. Tomaro
Keyword(s):  
Salt Stress ◽  
Helianthus Annuus ◽  
Helianthus Annuus L

scholarly journals EFEITOS DA SUPLEMENTAÇÃO COM RESÍDUO DA ATIVIDADE DA CARCINICULTURA EM PLANTAS DE GIRASSOL SUBMETIDAS A CONDIÇÕES DE ESTRESSE HÍDRICO

Irriga ◽  
2018 ◽  
Vol 22 (3) ◽  
pp. 591-605
Author(s):  
BRENNDA BEZERRA BRAGA ◽  
Franklin Aragão Gondim ◽  
Francisco Holanda Nunes Junior ◽  
Sabrina Isabel De Oliveira Paiva ◽  
Rifandreo Monteiro Martins ◽  
...  
Keyword(s):  
Drought Stress ◽  
Plant Growth ◽  
Helianthus Annuus ◽  
Antioxidative Enzymes ◽  
Stress Conditions ◽  
Shrimp Farming ◽  
Production Costs ◽  
Shrimp Waste ◽  
Helianthus Annuus L ◽  
Federal Institute

EFEITOS DA SUPLEMENTAÇÃO COM RESÍDUO DA ATIVIDADE DA CARCINICULTURA EM PLANTAS DE GIRASSOL SUBMETIDAS A CONDIÇÕES DE ESTRESSE HÍDRICO  BRENNDA BEZERRA BRAGA1; FRANSCISCO HOLANDA NUNES JUNIOR2; SABRINA ISABEL DE OLIVEIRA PAIVA1; RIFANDREO MONTEIRO BARBOSA1; ROBERTO ALBUQUERQUE PONTES FILHO1 E FRANKLIN ARAGÃO GONDIM1*  1Instituto Federal de Educação, Ciência e Tecnologia do Estado do Ceará – Campus Maracanaú. Av. Contorno Norte, 10, Distrito Industrial, Maracanaú, Ceará, Brasil. Email: [email protected]; [email protected]; [email protected]; [email protected]; *[email protected] (autor correspondente).  2Instituto Federal de Educação, Ciência e Tecnologia do Estado do Ceará – Campus Jaguaribe. Av. B - Bairro Manoel Costa Moraes, Jaguaribe, Ceará, Brasil. Email: [email protected]  1 RESUMO Objetivou-se identificar os efeitos da utilização de resíduo de carcinicultura sobre o crescimento e sistema enzimático antioxidativo de girassol em condições de estresse hídrico. O trabalho foi conduzido na casa de vegetação do Instituto Federal do Ceará – campus Maracanaú, Ceará, Brasil. As sementes foram semeadas em baldes contendo: 1) areia de granulometria fina; 2) areia + adubo; 3) areia + 7g de resíduo de carcinicultura; 4) areia + 14g de resíduo de carcinicultura. Decorridos 16 dias da semeadura, metade de cada grupo de plântulas descrito foi submetido à suspensão de rega. Foram realizadas 2 coletas:19 e 21 dias após a semeadura. Determinaram-se: as matérias frescas e secas da parte aérea, das raízes e total e as atividades das enzimas antioxidativas em folhas e raízes. De modo geral, a utilização de resíduo de carcinicultura no substrato proporcionou melhoria no crescimento das plantas. Isso pode ter ocorrido devido ao aumento nas atividades das enzimas antioxidativas. Em condições controle, a aplicação de 14g de resíduo ocasionou maiores produções de matéria seca total e atividades das enzimas antioxidativas. Concluiu-se que o resíduo de carcinicultura pode ser uma alternativa aos fertilizantes, reduzindo os custos de produção, além de ser uma destinação adequada ao resíduo de carcinicultura. Palavras-chave: estresse oxidativo, Helianthus annuus L., biofertilizante  BRAGA, B. B.; NUNES JUNIOR, F. H.; PAIVA, S. I. O.; BARBOSA, R. M.; PONTES FILHO, R. A.; GONDIM, F. AEFFECTS OF SUPPLEMENTATION WITH WASTE OF SHRIMP FARMING ON SUNFLOWER PLANTS UNDER DROUGHT STRESS CONDITIONS  2 ABSTRACT The aim of this study was to identify the effects of the use of shrimp waste on plant growth and the antioxidative enzymatic defense system of sunflower under drought stress conditions. The experiment was carried out under greenhouse conditions at the Instituto Federal de Educação, Ciência e Tecnologia (Federal Institute of Education, Science and Technology), Maracanaú Campus, Ceará, Brazil. The seeds were sown in plastic pots containing: 1) fine-grained sand; 2) sand + fertilizer; 3) sand + 7g of shrimp waste; 4) sand + 14g shrimp waste. At 16 days after sowing, half of each seedling group described was submitted to irrigation suspension. Two plant harvests were performed: at 19 and 21 days after sowing. The following parameters were determined: shoots, roots and total fresh and dry masses, and activities of antioxidative enzymes in shoots and roots. In general, the use of shrimp waste in the substrate provided higher plant growth. This could be attributed to the increased activity of antioxidative enzymes. Under control conditions, the application of 14g of waste led to higher total dry mass and higher activities of antioxidative enzymes. It is concluded that the shrimp waste may be an alternative to fertilizers, reducing production costs.  Moreover, it seems to be an adequate disposal for shrimp farming waste. Keywords: oxidative stress, Helianthus annuus L., biofertilizer

scholarly journals The free proline levels in transgenic sunflower (Helianthus annuus L.) T3 plants with double-stranded proline dehydrogenase gene RNA-suppressor

1970 ◽  
pp. 211-214 ◽  
Author(s):  
A. G. Komisarenko ◽  
S. I. Mykhalska
Keyword(s):  
Transgenic Plants ◽  
Helianthus Annuus ◽  
High Elevation ◽  
Stress Conditions ◽  
Free Proline ◽  
Wild Type ◽  
Helianthus Annuus L ◽  
Osmotic Tolerance ◽  
Dehydrogenase Gene ◽  
Plant Shoots

Aim. The investigation of the T3 transgenic sunflower plants osmotic tolerance there were developed. The levels of free proline in plant shoots and roots were estimated. Methods. Mature sunflower plants (T3 and wild type) were cultured in standard pots. Those genotypes were tested during 12-day artificial drying. The levels of free proline in plant shoots and roots were measured. Results. The proline contents in transgenic plants preferred those parameters of control plants both under normal and stress conditions. The proline levels in shoots and roots increased in all genotypes cultivated under stress conditions. The shoot/root proline ratio of control plants was constant during whole experiment, while in T3 plants this parameter changed due to high elevation in roots. Conclusions. The changes of shoot/root proline ratio of T3 plants were the result of free proline transfer among plant organs. Keywords: Helianthus annuus L., transgenic plants, L-proline, shoot/root proline ratio.

A genotype-independent system of regeneration from cotyledons of sunflower (Helianthus annuus L.) The role of ethylene

Plant Science ◽  
1992 ◽  
Vol 86 (2) ◽  
pp. 215-221 ◽  
Author(s):  
Khalid M.B. Chraibi ◽  
Jean-Claude Castelle ◽  
Alain Latche ◽  
Jean-Paul Roustan ◽  
Jean Fallot
Keyword(s):  
Helianthus Annuus ◽  
Independent System ◽  
Helianthus Annuus L

The Role of the Peripheral Cell Layers in the Geotropic Curvature of Sunflower Hypocotyls: a New Model of Shoot Geotropism

1977 ◽  
Vol 4 (3) ◽  
pp. 337 ◽  
Author(s):  
R Firn ◽  
J Digby
Keyword(s):  
Helianthus Annuus ◽  
Growth Regulator ◽  
Differential Rate ◽  
Lateral Movement ◽  
Differential Growth ◽  
Peripheral Cell ◽  
New Model ◽  
Helianthus Annuus L ◽  
Cell Layers

The rate of elongation of sunflower (Helianthus annuus L.) hypocotyl sections was found to be dependent on the rate of growth of the outermost cell layers (peripheral cell layers) of that tissue. Hypocotyl sections from which those layers had teen peeled grew but did not show typical geotropic curvature. A model of geotropic curvature is proposed where the differential growth causing curvature is due to a differential rate of elongation between the upper and lower peripheral cell layers of a horizontal shoot. In the model it is speculated that the peripheral cell layers are the site of both geoperception and georesponse. The model does not involve a lateral movement of a growth regulator and experiments with longitudinally bisected hypocotyl sections provided evidence consistent with this model but inconsistent with the Cholodny-Went theory of geotropism.

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