Increasing salinity led to substantially higher ratios of mesophyll surface area to leaf area (A(mes)/A) for Phaseolus vulgaris and Gossypium hirsutum and a smaller increase for Atriplex patula, a salt-tolerant species. The increase in internal surface for CO(2) absorption did not lead to higher CO(2) uptake rates, since the CO(2) resistance expressed on the basis of mesophyll cell wall area (r...

Monoxia obesula Blake, 1939, a species native to North America, is newly found in Sardinia, Italy. This discovery constitutes the first report of the species from Europe, as well as the first report from outside of the U.S.A. The species is redescribed and illustrated, and errors in the original description are corrected. Host plants are species of Atriplex and Chenopodium occurring in saline h...

Analysis of chloroplast DNA varia­ tion in species of Lycopersicon (Solan­ aceae) has demonstrated the utility of the techniques for assessing phyloge­ netic relationships among species (Pal­ mer and Zamir, 1982). A similar but more extensive survey has been initi­ ated in the genus Atriplex (Chenopo­ diaceae) using the same techniques. Atriplex is a genus of over 400 de­ scribed species and ha...

and λ̂ := λ̂ ∈Argmin λ∈Λ̂ε ‖λ‖l1 . In the case where f∗ := fλ∗ , λ ∗ ∈ R , Candes and Tao [Ann. Statist. 35 (2007) 2313–2351] suggested using λ̂ as an estimator of λ. They called this estimator “the Dantzig selector”. We study the properties of fλ̂ as an estimator of f∗ for regression models with random design, extending some of the results of Candes and Tao (and providing alternative proofs of thes...

the aim of this study was to investigate the fermentation characteristics and cellulolytic enzymes activities of dromedary camels rumen anaerobic fungi in fed with cultivated and pasture forages. hence, the inoculant of rumen anaerobic fungi was prepared by using specific medium and the gas production, digestibility and enzyme activity of rumen fungi were determined on the basis of a 2 × 2 fact...

In this study, two halophilic bacterial strains isolated from saline habitats in Argentina grew in the presence of gas oil. They were identified as Halomonas spp. and Nesterenkonia sp. by 16S ribosomal RNA sequencing. Chemotaxis towards gas oil was observed in Halomonas spp. by using swimming assays.

the toxicity of four potentially toxic trace elements (cu, ni, pb and zn) to annual atriplex (a.hortensis and a. rosea) was examined to determine if this plant showed sufficient tolerance to be used tophytoremediate soils polluted with these heavy metals. the soils, which contained up to (per kilogram) 501mg cu, 1674 mg ni, 1334 mg pb and 3588 mg of zn were sampled around metal-contaminated sit...