Histochemical Localization of Essential Oils and Bioactive Substances in the Seed Coat of the Halophyte Crithmum maritimum L. (Apiaceae)

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

doi:10.1007/s12374-009-9057-3

Cited by 29 publications

(40 citation statements)

References 20 publications

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“…The surface structure was subjected to high-resolution scanning electron microscopy (model S-800, FESEM, Hitachi, Tokyo, Japan) at an accelerating voltage of 3 kV under high vacuum conditions (Penfield et al , 2001; Atia et al , 2009). …”

Section: Methodsmentioning

confidence: 99%

The Arabidopsis sn-1-specific mitochondrial acylhydrolase AtDLAH is positively correlated with seed viability

Seo

Kim

2011

Journal of Experimental Botany

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Lipid-derived molecules produced by acylhydrolases play important roles in the regulation of diverse cellular functions in plants. In Arabidopsis, the DAD1-like phospholipase A1 family consists of 12 members, all of which possess a lipase 3 domain. In this study, the biochemical and cellular functions of AtDLAH, an Arabidopsis thaliana DAD1-like acylhydrolase, were examined. Bacterially expressed AtDLAH contained phospholipase A1 activity for catalysing the hydrolysis of phospholipids at the sn-1 position. However, AtDLAH displayed an even stronger preference for 1-lysophosphatidylcholine, 1-monodiacylglycerol, and phosphatidic acid, suggesting that AtDLAH is a sn-1-specific acylhydrolase. The AtDLAH gene was highly expressed in young seedlings, and its encoded protein was exclusively localized to the mitochondria. AtDLAH-overexpressing transgenic seeds (35S:AtDLAH) were markedly tolerant to accelerated-ageing treatment and thus had higher germination percentages than wild-type seeds. In contrast, the atdlah loss-of-function knockout mutant seeds were hypersusceptible to accelerated-ageing conditions. The 35S:AtDLAH seeds, as opposed to the atdlah seeds, exhibited a dark red staining pattern following tetrazolium treatment under both normal and accelerated-ageing conditions, suggesting that AtDLAH expression is positively correlated with seed viability. The enhanced viability of 35S:AtDLAH seeds was accompanied by more densely populated epidermal cells, lower levels of accumulated lipid hydroperoxides, and higher levels of polar lipids as compared with wild-type and atdlah mutant seeds. These results suggest that AtDLAH, a mitochondrial-localized sn-1-specific acylhydrolase, plays an important role in Arabidopsis seed viability.

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Section: Methodsmentioning

confidence: 99%

The Arabidopsis sn-1-specific mitochondrial acylhydrolase AtDLAH is positively correlated with seed viability

Seo

Kim

2011

Journal of Experimental Botany

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“…C. maritimum L. produces a high amount of viable fruits that can germinate without any inconvenience, especially in distilled water [9]. Nonetheless, despite the fact that this halophyte usually grows near the seawater, seed germination is inhibited when salinities exceed 50 mM NaCl [9,10]. In the natural habitat, sea fennel fruits are always exposed to several ions such as Na + , Mg 2+ , Ca 2+ , Cl − , and SO 4 2− .…”

Section: Biologymentioning

confidence: 99%

“…Today, cultivation of vegetables and several other crops are facing many problems such as temperature increase, low availability of high quality water and soil salinization; these problems are attributable to climate change [7]. In this context, it is most important to have the possibility of proposing alternative crops, such as halophyte species, since they can better adapt under hard conditions, becoming suitable candidates as emerging cash crop and/or medicinal plants [8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Reviewing the Prospects of Sea Fennel (Crithmum maritimum L.) as Emerging Vegetable Crop

Renna

2018

Plants

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Sea fennel (Crithmum maritimum L.), a perennial halophyte typical of coastal habits, is well known for several food and non-food uses. This review presents both the characteristics and ethnobotany as well as the findings, technical advances and potential of sea fennel research with the aim to improve and disseminate knowledge regarding the value and potentials of this halophyte. Current knowledge suggest that sea fennel shows good potential as an emerging crop, being a refined food and also an interesting source of human health compounds and crop protection products. Moreover, sea fennel may be proposed as an alternative and sustainable cash crop also in the context of a saline agriculture regime. On the other hand, some aspects of sea fennel require further understanding; therefore, new research and development activities should be carried out before full commercial exploitation.

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“…The surface structures of wild-type, SRP-over-expressing, and srp-mutant seeds were examined by high-resolution SEM (model S-800, FESEM, Hitachi, Tokyo, Japan) at an accelerating voltage of 3 kV under high vacuum conditions (Penfield et al, 2001;Atia et al, 2009). For TEM, hypocotyl tissues of 6-d-old seedlings were fixed in 2.5% (v/v) glutaraldehyde, 4% (v/v) formaldehyde, and 100 mM phosphate buffer, pH 7.2, as described by Kim et al (2011).…”

Section: Sem and Temmentioning

confidence: 99%

Arabidopsis Small Rubber Particle Protein Homolog SRPs Play Dual Roles as Positive Factors for Tissue Growth and Development and in Drought Stress Responses

et al. 2016

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Lipid droplets (LDs) act as repositories for fatty acids and sterols, which are used for various cellular processes such as energy production and membrane and hormone synthesis. LD-associated proteins play important roles in seed development and germination, but their functions in postgermination growth are not well understood. Arabidopsis (Arabidopsis thaliana) contains three SRP homologs (SRP1, SRP2, and SRP3) that share sequence identities with small rubber particle proteins of the rubber tree (Hevea brasiliensis). In this report, the possible cellular roles of SRPs in postgermination growth and the drought tolerance response were investigated. Arabidopsis SRPs appeared to be LD-associated proteins and displayed polymerization properties in vivo and in vitro. SRP-overexpressing transgenic Arabidopsis plants (35S:SRP1, 35S:SRP2, and 35S:SRP3) exhibited higher vegetative and reproductive growth and markedly better tolerance to drought stress than wild-type Arabidopsis. In addition, constitutive over-expression of SRPs resulted in increased numbers of large LDs in postgermination seedlings. In contrast, single (srp1, 35S:SRP2-RNAi, and srp3) and triple (35S:SRP2-RNAi/srp1srp3) loss-of-function mutant lines exhibited the opposite phenotypes. Our results suggest that Arabidopsis SRPs play dual roles as positive factors in postgermination growth and the drought stress tolerance response. The possible relationships between LD-associated proteins and the drought stress response are discussed.Environmental stresses, including drought, high salinity, oxidative stress, and unfavorable temperatures, profoundly affect the growth and development of higher plants. Because of their sessile life cycle, plants have developed self-protective mechanisms to increase their tolerance to short-and long-term stresses by triggering diverse sets of signal transduction pathways and activating stress-responsive genes. The genetic and cellular mechanisms in response to abiotic stress have been widely documented in higher plants (Shinozaki and

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Histochemical Localization of Essential Oils and Bioactive Substances in the Seed Coat of the Halophyte Crithmum maritimum L. (Apiaceae)

Cited by 29 publications

References 20 publications

The Arabidopsis sn-1-specific mitochondrial acylhydrolase AtDLAH is positively correlated with seed viability

The Arabidopsis sn-1-specific mitochondrial acylhydrolase AtDLAH is positively correlated with seed viability

Reviewing the Prospects of Sea Fennel (Crithmum maritimum L.) as Emerging Vegetable Crop

Arabidopsis Small Rubber Particle Protein Homolog SRPs Play Dual Roles as Positive Factors for Tissue Growth and Development and in Drought Stress Responses

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