Microvirga vignae is a recently described species of root-nodule bacteria isolated from cowpeas grown in a Brazilian semiarid region. We report here the 6.4-Mb draft genome sequence and annotation of M. vignae type strain BR 3299. This genome information may help to understand the mechanisms underlying the ability of the organism to grow under drought and high-temperatures conditions.

A principal and independent component analysis (PCA ICA) a minimum noise fraction (MNFA) were applied in this study to Landsat 8 Operational Land Imager (OLI) images along the Adıyaman fault zone Eastern Turkey. These analyses indicated that lithologic units, patterns, morphological structural features can be mapped highly accurately by using spectral-matching techniques regions where rocks are...

It has been proposed that aridity and grazing are convergent selective forces: each one selects for traits conferring resistance to both. However, this conceptual model has not yet been experimentally validated. The aim of this work was to experimentally evaluate the effect of aridity and grazing, as selective forces, on drought and grazing resistance of populations of Trichloris crinita, a nat...

De Sá S.G., Pinheiro Junior J.W., Vilela S.M.O., Moraes E.P.B.X., Albuquerque P.P.F., Porto W.J.N., Ferreira D.R.A. & Mota R.A. 2015. Occurrence and risk factors assessment associated with Mycoplasma gallisepticum (MG) infection in chickens in the semiarid region of Pernambuco, Brazil. Pesquisa Veterinária Brasileira 35(6):531535. Laboratório de Doenças Infecto-Contagiosas dos Animais Doméstico...

Agriculture is the single biggest user of land and water in Morocco; however its performances are still low due to high rainfall variation and rates of soil productivity depletion. Increasing concerns about soil and environment quality degradation have raised the need to review existing tillage management systems and develop new systems for seed-bed preparation. Consequently, No-tillage is foun...

Sphingobium sp. 22B is a polycyclic aromatic hydrocarbon-degrading strain isolated from Patagonia, Argentina, with capabilities to withstand the environmental factors of that semiarid region. The draft genome shows the presence of genes related with responses to carbon starvation and drying environmental conditions.

Opuntia spp. plants occupy an important socioeconomic role in arid and semiarid zones where water is scarce. Irrigation increases the productivity of these plants; however, its effect on yield, composition, physicochemical properties mucilage unknown. Three irrigation regimens were tested: non-irrigated (rainwater), supplemental (irrigation between field capacity (0.28 m3 m−3) permanent wilting...

In arid and semiarid areas, the effects of afforestation on soil organic carbon (SOC) have received considerable attention. In these areas, in fact, soil inorganic carbon (SIC), rather than SOC, is the dominant form of carbon, with a reservoir approximately 2-10 times larger than that of SOC. A subtle fluctuation of SIC pool can strongly alter the regional carbon budget. However, few studies ha...

Changes in climate, land management and fire regime have contributed to woody species expansion into grasslands and savannas worldwide. In the USA, Pinus ponderosa P.&C. Lawson and Juniperus virginiana L. are expanding into semiarid grasslands of Nebraska and other regions of the Great Plains. We examined P. ponderosa and J. virginiana seedling response to soil water content, one of the most im...

Nineteen taxa of Mucorales, belonging to Absidia, Apophysomyces, Cunninghamella, Fennellomyces, Lichtheimia, Mucor, Mycotypha, Rhizopus and Syncephalastrum were isolated from 36 composite soil samples in three semiarid areas in the State of Pernambuco (Triunfo, Cabrobó and Belém de São Francisco), Northeast Brazil, which are characterized by Caatinga vegetation. Triunfo is preserved, whereas Ca...