ABA, GA3, and nitrate may control seed germination of Crithmum maritimum (Apiaceae) under saline conditions

Atia, Abdallah; Debez, Ahmed; Barhoumi, Zouhaier; Smaoui, Abderrazak; Abdelly, Chédly

doi:10.1016/j.crvi.2009.03.009

Cited by 75 publications

(61 citation statements)

References 21 publications

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“…Bajehbaj (2010) showed that KNO 3 primed seeds increased seed germination percentage and seedlings growth in sunflower cultivars under salinity conditions by promoting K and Ca accumulation and inducing osmoregulation by the accumulation of proline. A positive effect of KNO 3 on germination in saline condition was also documented in halophytes like Suaeda salsa (Li et al, 2005) and Crithmum maritimum (Atia et al, 2009).…”

Section: Discussionmentioning

confidence: 91%

The effect of osmopriming on germination, seedling growth and phosphatase activities of lettuce under saline condition

Nasri¹,

Kaddour²,

Mahmoudi³

et al. 2011

Afr. J. Biotechnol.

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This experiment was conducted to evaluate the effects of osmopriming with KNO 3 on germination traits, seedling growth and phosphatase activities of lettuce (Lactuca sativa L.) seeds under salinity condition. Lettuce seeds (Var. Vista) were primed with KNO 3 (0.05%) for 2 h at 25°C in the dark. Primed and nonprimed seeds were germinated on distilled water containing 0 or 100 mM NaCl, for four days. Results show that germination percentage, root and shoot length and seedling fresh weight of primed seeds was higher than that of non-primed seeds in saline condition. Priming also increased acid phosphatase and phytase activities in the roots, shoots and cotyledons under salt stress. It seems that seed priming can be used for improving performance of lettuce seeds and seedlings grown under saline conditions.

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Section: Discussionmentioning

confidence: 91%

The effect of osmopriming on germination, seedling growth and phosphatase activities of lettuce under saline condition

Nasri¹,

Kaddour²,

Mahmoudi³

et al. 2011

Afr. J. Biotechnol.

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“…In addition, salinity can affect germination by reducing the N content available for embryo growth in seeds, as it delays the mobilization of protein stores, delaying the development of the new plant (Voigt et al, 2009). Atia et al (2009) reported that NO 3 -derived from the salts NaNO 3 and KNO 3 increased germination and the germination speed index of both control and stressed seeds (100 mM NaCl). Abdelgabir et al (2012) demonstrated that NO 3 -priming promoted the longitudinal growth of the roots of Jatropha curcas L. seedlings.…”

Section: Discussionmentioning

confidence: 99%

“…Even though benefits can be optimal using the appropriate Ψs for seed priming, the benefits can still be improved by the action of NO 3 -derived from the salt NaNO 3 . Atia et al (2009), usied KNO 3 and reported increases of 35% and 330% in the percentage of germination in Crithmum maritimum seeded in media containing 100 mM and 200 mM NaCl, respectively. Positive effects on germination with the use of nitrogenous salts have also been documented in halophytes such as Atriplex griffithii (Khan et al, 2000), Zygophyllum simplex L. (Khan et al, 2002) and Suaeda salsa (Li et al, 2005) as well as in tolerant species such as Lactuca sativa (Hendricks et al, 1974) and Avena fatua (McIntyre et al, 1996).…”

Section: Discussionmentioning

confidence: 99%

“…The ABA level increases in response to both drought and salt stress in the cell signaling process and involve both the perception and transduction of stress, regulating the gene expression of key enzymes for the biosynthesis and catabolism of ABA (Zhang et al, 2006). According to Atia et al (2009), the increase in germination percentage caused by priming with KNO 3 or NaNO 3 is due to the action of the ion NO 3 -, which alleviates secondary dormancy by decreasing ABA levels in the seed (Rachedi- Ali et al 2004). According to Copeland and McDonald (1995), this process is involved in breaking dormancy.…”

Section: Discussionmentioning

confidence: 99%

“…These results were consistent with the NaNO 3 action on castor bean seeds by reducing the germination time by 4.2 days under salinity (Fig 1f). Thus, NO 3 -assimilation leads to the production of amino acids and nitrogenous compounds that promote growth by providing basic structural materials (Atia et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

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Inducing salt tolerance in castor bean through seed priming

Lopes¹,

Prisco²,

Gomes-Filho³

2018

Aust J Crop Sci

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Castor bean (Ricinus communis L.) cultivation requires production techniques appropriate for its growth conditions. Thus, the characterization of the deleterious effects of salinity on seed germination and on seedling establishment and the evaluation of the use of priming techniques on seeds could reduce replanting costs and improve emergence uniformity, preparing plant responses to salt stress. The goals of this current research were to characterize the deleterious effects of salinity on seed germination and on seedling establishment and to evaluate the use of the seed priming techniques as a tool to minimize these deleterious effect. In this research, castor bean seeds, cv. BRS-Energia was used to characterize effects of salt stress on germination and seedling establishment. Then, some chemicals such as PEG-6000 and H 2 O 2 were evaluated to find the beneficial priming techniques for castor bean seeds against salt stress. Our results indicate that water imbibition by the seed under salinity conditions decelerated the time of exposure to salinity. Salinity also affected the germination of castor bean seeds under an Ψs of -0.4 MPa and seedling growth was already affected under an Ψs of -0.16 MPa. Priming with CaCl 2 , NaNO 2 , NaNO 3 and PEG-6000 showed promising results under an Ψs of 0.0 MPa, but priming with NaNO 3 and PEG-6000 were ones that contributed most to better germination and establishment of seedlings under saline conditions. However, NaNO 3 is the most recommended priming agent for castor bean because accelerated seed germination, reducing the time to emergence and planting risks.

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Influence of an abscisic acid (ABA) seed coating on seed germination rate and timing of Bluebunch Wheatgrass

Richardson

Badrakh

Roundy

et al. 2019

Ecology and Evolution

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Semi‐arid rangeland degradation is a reoccurring issue throughout the world. In the Great Basin of North America, seeds sown in the fall to restore degraded sagebrush ( Artemisia spp.) steppe plant communities may experience high mortality in winter due to exposure of seedlings to freezing temperatures and other stressors. Delaying germination until early spring when conditions are more suitable for growth may increase survival. We evaluated the use of BioNik™ (Valent BioSciences LLC) abscisic acid (ABA) to delay germination of bluebunch wheatgrass ( Pseudoroegneria spicata ). Seed was either left untreated or coated at five separate rates of ABA ranging from 0.25 to 6.0 g 100 g −1 of seed. Seeds were incubated at five separate constant temperatures from 5 to 25°C. From the resultant germination data, we developed quadratic thermal accumulation models for each treatment and applied them to 4 years of historic soil moisture and temperature data across six sagebrush steppe sites to predict germination timing. Total germination percentage remained similar across all temperatures except at 25°C, where high ABA rates had slightly lower values. All ABA doses delayed germination, with the greatest delays at 5–10°C. For example, the time required for 50% of the seeds to germinate at 5°C was increased by 16–46 d, depending on the amount of ABA applied. Seed germination models predicted that the majority of untreated seed would germinate 5–11 weeks after a 15 October simulated planting date. In contrast, seeds treated with ABA were predicted to delay germination to late winter or early spring. These results indicate that ABA coatings may delay germination of fall planted seed until conditions are more suitable for plant survival and growth.

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ABA, GA3, and nitrate may control seed germination of Crithmum maritimum (Apiaceae) under saline conditions

Cited by 75 publications

References 21 publications

The effect of osmopriming on germination, seedling growth and phosphatase activities of lettuce under saline condition

The effect of osmopriming on germination, seedling growth and phosphatase activities of lettuce under saline condition

Inducing salt tolerance in castor bean through seed priming

Influence of an abscisic acid (ABA) seed coating on seed germination rate and timing of Bluebunch Wheatgrass

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