Learning from the Arabidopsis Experience. The Next Gene Search Paradigm

Bressan, Ray A.; Zhang, Changqing; Zhang, Hui; Hasegawa, Paul M.; Bohnert, Hans J.; Zhu, Jian‐Kang

doi:10.1104/pp.010752

Cited by 182 publications

(135 citation statements)

References 28 publications

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“…One of these is the genome of Arabidopsis lyrata [19], a potential comparative model for drought tolerance [20], and T. parvula (Figure 1a,b) will be perhaps even more useful for elucidating a broad range of environmental adaptations [10]. This species and the congeneric T. salsuginea are endemic to regions that experience temperature extremes, poor, degraded, and toxic soils, and especially very high salinities [6,21]. The T. parvula genome is of particular interest because chromosomal assemblies that approach the coverage of A. thaliana are available.…”

Section: Genomic Resources: the Harvest Of Cheap Deep Sequencingmentioning

confidence: 99%

Life at the extreme: lessons from the genome

Dassanayake

Bohnert

et al. 2012

Genome Biol

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Section: Genomic Resources: the Harvest Of Cheap Deep Sequencingmentioning

confidence: 99%

Life at the extreme: lessons from the genome

Dassanayake

Bohnert

et al. 2012

Genome Biol

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“…The crucifer genus Thellungiella includes a number of species that have recently been recognized as models for identifying processes, pathways, and genes of importance in plant abiotic stress tolerance (Bressan et al, 2001;Xiong and Zhu, 2002;Taji et al, 2004;Amtmann et al, 2005;Griffith et al, 2007). In particular, Thellungiella salsuginea, previously known as Thellungiella halophila (Al-Shehbaz and O'Kane, 1995;Amtmann, 2009), has been studied for its extreme salt, cold, and freezing tolerance and for its efficient mobilization of resources in poor or degraded soils (Kant et al, 2008).…”

mentioning

confidence: 99%

Genome Structures and Halophyte-Specific Gene Expression of the Extremophile Thellungiella parvula in Comparison with Thellungiella salsuginea (Thellungiella halophila) and Arabidopsis

Dassanayake

et al. 2010

Plant Physiology

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The genome of Thellungiella parvula, a halophytic relative of Arabidopsis (Arabidopsis thaliana), is being assembled using Roche-454 sequencing. Analyses of a 10-Mb scaffold revealed synteny with Arabidopsis, with recombination and inversion and an uneven distribution of repeat sequences. T. parvula genome structure and DNA sequences were compared with orthologous regions from Arabidopsis and publicly available bacterial artificial chromosome sequences from Thellungiella salsuginea (previously Thellungiella halophila). The three-way comparison of sequences, from one abiotic stress-sensitive species and two tolerant species, revealed extensive sequence conservation and microcolinearity, but grouping Thellungiella species separately from Arabidopsis. However, the T. parvula segments are distinguished from their T. salsuginea counterparts by a pronounced paucity of repeat sequences, resulting in a 30% shorter DNA segment with essentially the same gene content in T. parvula. Among the genes is SALT OVERLY SENSITIVE1 (SOS1), a sodium/proton antiporter, which represents an essential component of plant salinity stress tolerance. Although the SOS1 coding region is highly conserved among all three species, the promoter regions show conservation only between the two Thellungiella species. Comparative transcript analyses revealed higher levels of basal as well as salt-induced SOS1 expression in both Thellungiella species as compared with Arabidopsis. The Thellungiella species and other halophytes share conserved pyrimidine-rich 5# untranslated region proximal regions of SOS1 that are missing in Arabidopsis. Completion of the genome structure of T. parvula is expected to highlight distinctive genetic elements underlying the extremophile lifestyle of this species.

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“…These two species are closely related, both in their morphology and in their genome sequence (90-95% identity at the cDNA level; Bressan et al, 2001;Zhu, 2001). Furthermore, A. thaliana and T. salsuginea can be easily transformed and have several other characteristics such as a short life cycle and abundant seed production (Volkov and Amtmann, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Until now, Arabidopsis thaliana and Thellungiella salsuginea (also known as T. halophila), members of the Brassicaceae family (Al-Shehbaz et al, 1999), have been identified as potential model systems for the study of abiotic stress tolerance (Bressan et al, 2001;Inan et al, 2004;Volkov et al, 2004). These two species are closely related, both in their morphology and in their genome sequence (90-95% identity at the cDNA level; Bressan et al, 2001;Zhu, 2001).…”

Section: Introductionmentioning

confidence: 99%

Arabidopsis thaliana Tolerates Iron Deficiency more than Thellungiella Salsuginea by Inducing Metabolic Changes at the Root Level

Msilini¹,

Ferhi²,

Chebbi³

et al. 2015

Acta Biologica Cracoviensia S. Botanica

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Several studies have used A. thaliana as a model to identify the physiological and molecular mechanisms underlying iron deficiency tolerance in plants. Here, Arabidopsis thaliana and Thellungiella salsuginea were used to investigate the differential responses to iron deficiency of these two species. Plants were cultivated in hydroponic medium containing 5 or 0 μM Fe, for 10 days. Results showed that rosette biomass was more reduced in T. salsuginea than in A. thaliana when grown on Fe-deficient medium. As a marker for iron deficiency tolerance, the induction of ferric chelate reductase (FCR) and phosphoenolpyruvate carboxylase (PEPC) activities was observed only in A. thaliana roots. In addition, we found that the accumulation of phenolic acids in roots of N1438 ecotype of A. thaliana was stimulated by Fe deficiency. Furthermore, an increase of flavonoids content in the root and exudates was observed under Fe-deficiency in this ecotype. Unlike other abiotic stresses, it appears that iron deficiency effects were more pronounced in Thellungiella than in Arabidopsis. The higher tolerance of the Arabidopsis plant to iron deficiency may be due to the metabolic changes occurring in the roots.K Ke ey y w wo or rd ds s: : Arabidopsis thaliana, enzymatic activities, iron deficiency, Thellungiella salsuginea, polyphenol production.

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Learning from the Arabidopsis Experience. The Next Gene Search Paradigm

Cited by 182 publications

References 28 publications

Life at the extreme: lessons from the genome

Life at the extreme: lessons from the genome

Genome Structures and Halophyte-Specific Gene Expression of the Extremophile Thellungiella parvula in Comparison with Thellungiella salsuginea (Thellungiella halophila) and Arabidopsis

Arabidopsis thaliana Tolerates Iron Deficiency more than Thellungiella Salsuginea by Inducing Metabolic Changes at the Root Level

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