Sugarcane: Sugarcane variety with higher cell wall digestibility.

Genetically modified sugarcane with increased cell wall digestibility. The technology aims to improve plant biomass for production of cellulosic ethanol (2G), animal feed, and high value-added chemical compounds.TC 289

Sugarcane: Sugarcane variety resistant to insect pests and herbicides.

Genetically modified sugarcane with resistance to sugarcane borer (Diatraea saccharalis) and glyphosate. A technology of great economic importance for the sugar-energy sector, the result of a partnership between startup PangeiaBiotech and Embrapa Agroenergia.TC 287

Cana-de-açúcar: variedade de cana-de-açúcar tolerante à seca.

TC 178

Cana-de-açúcar: variedade de cana-de-açúcar resistente a insetos-praga e tolerante a herbicidas.

Cana-de-açúcar geneticamente modificada com resistência à broca-da-cana (Diatraea saccharalis) e tolerância ao herbicida glifosato. Tecnologia de grande importância econômica para o setor sucroenergético, resultado de parceria entre a startup PangeiaBiotech e a Embrapa Agroenergia.bitstream/item/223700/1/Cana-de-ac807u769car-Molinari-2020.pd

Outflow and dense gas emission from massive Infrared Dark Clouds

Infrared Dark Clouds are expected to harbor sources in different, very young evolutionary stages. To better characterize these differences, we observed a sample of 43 massive Infrared Dark Clouds, originally selected as candidate high-mass starless cores, with the IRAM 30m telescope covering spectral line tracers of low-density gas, high-density gas, molecular outflows/jets and temperature effects. The SiO(2-1) observations reveal detections toward 18 sources. Assuming that SiO is exclusively produced by sputtering from dust grains, this implies that at least in 40% of this sample star formation is on-going. A broad range of SiO line-widths is observed (between 2.2 and 65km/s), and we discuss potential origins for this velocity spread. While the low-density tracers 12CO(2-1) and 13CO(1-0) are detected in several velocity components, the high-density tracer H13CO+(1--0) generally shows only a single velocity component and is hence well suited for kinematic distance estimates of IRDCs. Furthermore, the H13CO+ line-width is on average 1.5 times larger than that of previously observed NH3(1,1). This is indicative of more motion at the denser core centers, either due to turbulence or beginning star formation activity. In addition, we detect CH3CN toward only six sources whereas CH3OH is observed toward approximately 40% of the sample. Estimates of the CH3CN and CH3OH abundances are low with average values of 1.2x10^{-10} and 4.3x10^{-10}, respectively. These results are consistent with chemical models at the earliest evolutionary stages of high-mass star formation. Furthermore, the CH3OH abundances compare well to recently reported values for low-mass starless cores.Comment: 22 pages (ApJ referee style), 7 figures, accepted for Ap

Grass cell wall feruloylation: distribution of bound ferulate and candidate gene expression in Brachypodium distachyon

The cell walls of grasses such as wheat, maize, rice, and sugar cane, contain large amounts of ferulate that is ester-linked to the cell wall polysaccharide glucuronoarabinoxylan (GAX). This ferulate is considered to limit the digestibility of polysaccharide in grass biomass as it forms covalent linkages between polysaccharide and lignin components. Candidate genes within a grass-specific clade of the BAHD acyl-coA transferase superfamily have been identified as being responsible for the ester linkage of ferulate to GAX. Manipulation of these BAHD genes may therefore be a biotechnological target for increasing efficiency of conversion of grass biomass into biofuel. Here, we describe the expression of these candidate genes and amounts of bound ferulate from various tissues and developmental stages of the model grass Brachypodium distachyon. BAHD candidate transcripts and significant amounts of bound ferulate were present in every tissue and developmental stage. We hypothesize that BAHD candidate genes similar to the recently described Oryza sativa p-coumarate monolignol transferase (OsPMT) gene (PMT sub-clade) are principally responsible for the bound para-coumaric acid (pCA), and that other BAHD candidates (non-PMT sub-clade) are responsible for bound ferulic acid (FA). There were some similarities with between the ratio of expression non-PMT/PMT genes and the ratio of bound FA/pCA between tissue types, compatible with this hypothesis. However, much further work to modify BAHD genes in grasses and to characterize the heterologously expressed proteins is required to demonstrate their function

Photosynthetic performance of contrasting Jatropha curcas genotypes during the flowering and fruiting stages.

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