Abóbora-gila (cucurbita ficifolia), uma hortaliça pouco convencional cultivada no Rio Grande do Sul.

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Distância genética entre variedades crioulas de Capsicum chinense Genetic distance in Capsicum chinense landraces.

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Transferibilidade de marcadores microssatélites de coco (Cocos nucifera) para butiá (Butia odorata)

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Caracterização molecular de variedades crioulas de pimentas (Capsicum baccatum) com marcadores microssatélites.

Atualmente, muitas variedades crioulas de Capsicum baccatum são cultivadas pelos agricultores no Brasil. Essas populações são fontes de genes para tolerância ou resistência aos estresses bióticos e abióticos. Porém, grande parte dessas variedades está sendo perdida devido à erosão genética causada pela substituição de cultivares. A fim de conservar e caracterizar as variedades crioulas, a Embrapa Clima Temperados mantém, desde 2002, um Banco ativo de Germoplasma de Capsicum. Com objetivo de caracterizar variedades de C. baccatum com marcadores meleculares de microssatélites, foram analisados vinte acessos que integram o acervo do Banco Ativo Germoplasma de Capsicum da Embrapa Clima Temperado

Plasma-Induced Frequency Chirp of Intense Femtosecond Lasers and Its Role in Shaping High-Order Harmonic Spectral Lines

We investigate the self-phase modulation of intense femtosecond laser pulses propagating in an ionizing gas and its effects on collective properties of high-order harmonics generated in the medium. Plasmas produced in the medium are shown to induce a positive frequency chirp on the leading edge of the propagating laser pulse, which subsequently drives high harmonics to become positively chirped. In certain parameter regimes, the plasma-induced positive chirp can help to generate sharply peaked high harmonics, by compensating for the dynamically-induced negative chirp that is caused by the steep intensity profile of intense short laser pulses.Comment: 5 pages, 5 figure

Gene Transfer of Engineered Calmodulin Alleviates Ventricular Arrhythmias in a Calsequestrin-Associated Mouse Model of Catecholaminergic Polymorphic Ventricular Tachycardia

Catecholaminergic polymorphic ventricular tachycardia (CPVT) is a familial arrhythmogenic syndrome characterized by sudden death. There are several genetic forms of CPVT associated with mutations in genes encoding the cardiac ryanodine receptor (RyR2) and its auxiliary proteins including calsequestrin (CASQ2) and calmodulin (CaM). It has been suggested that impairment of the ability of RyR2 to stay closed (ie, refractory) during diastole may be a common mechanism for these diseases. Here, we explore the possibility of engineering CaM variants that normalize abbreviated RyR2 refractoriness for subsequent viral-mediated delivery to alleviate arrhythmias in non-CaM-related CPVT