Catálogo de publicaciones - revistas

<jats:title>Imperfect future immunity</jats:title> <jats:p> Humans are infected by several seasonal and cross-reacting coronaviruses. None provokes fully protective immunity, and repeat infections are the norm. Vaccines tend to be less efficient than natural infections at provoking immunity, and there are risks of adverse cross-reactions. Saad-Roy <jats:italic>et al.</jats:italic> used a series of simple models for a variety of immune scenarios to envisage immunological futures for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) with and without vaccines. The model outcomes show that our imperfect knowledge about the imperfect coronavirus immune landscape can give rise to diverging scenarios ranging from recurring severe epidemics to elimination. It is critical that we accurately characterize immune responses to SARS-CoV-2 for translation into managing disease control. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6518" page="811" related-article-type="in-this-issue" vol="370" xlink:href="10.1126/science.abd7343">811</jats:related-article> </jats:p>

<jats:title>Signaling for a weakness in cell walls</jats:title> <jats:p> Lateral roots form at regular intervals in the small mustard plant <jats:italic>Arabidopsis thaliana</jats:italic> . Wachsman <jats:italic>et al.</jats:italic> have now identified both pectin and subcellular vesicle trafficking as part of the oscillating signaling system that initiates lateral roots. Esterification of pectin regulates its function at the nascent lateral root site, altering the stiffness of cell walls and the strength of cell-cell adhesion. Because lateral root primordia must push through overlying cell layers, reduced cell adhesion at these sites might aid in the formation of lateral roots. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article issue="6518" page="819" related-article-type="in-this-issue" vol="370">819</jats:related-article> </jats:p>

<jats:title>Dust storms cause Mars to lose water</jats:title> <jats:p> Mars was once a wet planet, but it has lost most of its water through reactions that produce hydrogen, which escapes from the upper atmosphere into space. Stone <jats:italic>et al.</jats:italic> used data from the Mars Atmosphere and Volatile Evolution spacecraft to study how water is transported to the upper atmosphere and converted to hydrogen. They found that water can reach higher altitudes than previously thought, especially during global or regional dust storms. Photochemical modeling shows that this process dominates the current loss of water from Mars and influenced the evolution of its climate. </jats:p> <jats:p> <jats:italic>Science</jats:italic> , this issue p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6518" page="824" related-article-type="in-this-issue" vol="370" xlink:href="10.1126/science.aba5229">824</jats:related-article> </jats:p>