Yield Results and Stability Analysis from the Sorghum Regional Biomass Feedstock Trial

Gill, John R.; Burks, Payne S.; Staggenborg, Scott A.; Odvody, G. N.; Heiniger, Ronnie W.; Macoon, Bisoondat; Moore, Ken; Barrett, Michael; Rooney, William L.

doi:10.1007/s12155-014-9445-5

Cited by 57 publications

(74 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Sweet sorghum is an annual C 4 crop with tall stalks that that can be utilized for forage, silage (Ceotto et al, 2014;Kozłowski et al, 2006;O'Hara et al, 2013) or can be subjected to direct combustion, conversion to bioethanol or as a substrate for biogas production (Monteiro et al, 2012). Its biomass after juice extraction can be burnt in boilers to generate heat and steam for the operation of processing equipment and to generate electricity for both the process and export to the electricity network or may be converted into lignocellulosic ethanol (Rennie and Tubeileh, 2011;Zhao et al, 2012;Gill et al, 2014). It has been reported to have sulphur and ash contents that are 50 and 8 times lower, respectively, than that of lignite and its higher heating value has been measured to be 16.8 MJ kg −1 (Rennie and Tubeileh, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Sorghum is widely distributed across Africa, Asia and North America and plays an important role among cereal crops, taking the 5th place in terms of acreage (after wheat, rice, maize and barley). Its total global area is above 38 million hectares, while the size of its production is estimated at 57 million metric tons per year (Dweikat, 2012;O'Hara et al, 2013;Gill et al, 2014). In the temperate climate of central Europe sweet sorghum is cultivated mainly as a forage or bioenergy crop, often competitive with maize.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Use of sewage sludge in bioenergy production—A case study on the effects on sorghum biomass production

Kołodziej

Antonkiewicz

Stachyra

et al. 2015

European Journal of Agronomy

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Use of sewage sludge in bioenergy production—A case study on the effects on sorghum biomass production

Kołodziej

Antonkiewicz

Stachyra

et al. 2015

European Journal of Agronomy

View full text Add to dashboard Cite

“…Sorghum is more water efficient and requires less nitrogen fertilizer for growth, reducing groundwater contamination associated with large-scale crop production and allowing for growth in a wide variety of climates (Geng et al, 1989;Farre and Faci, 2006). Sorghum has a higher sugar yield per land area and shorter growing season than several alternative second-generation bioenergy crops, translating directly to higher yields per season of fermentable sugars for the production of biofuels or chemicals (Propheter et al, 2010;Gill et al, 2014). Moreover, the sorghum genome has been fully sequenced (Paterson et al, 2009), and several brown midrib mutations that favorably affect biomass conversion have been identified (Bout and Vermerris, 2003;Saballos et al, 2009Saballos et al, , 2012Sattler et al, 2009).…”

mentioning

confidence: 99%

The Structure and Catalytic Mechanism of Sorghum bicolor Caffeoyl-CoA O-Methyltransferase

Walker

Sattler

Regner³

et al. 2016

Plant Physiol.

View full text Add to dashboard Cite

ORCID IDs: 0000-0001-7799-2704 (M.R.); 0000-0002-6093-4521 (J.R.); 0000-0002-6814-4073 (S.E.S.); 0000-0002-0693-7860 (C.K.).Caffeoyl-coenzyme A 3-O-methyltransferase (CCoAOMT) is an S-adenosyl methionine (SAM)-dependent O-methyltransferase responsible for methylation of the meta-hydroxyl group of caffeoyl-coenzyme A (CoA) on the pathway to monolignols, with their ring methoxylation status characteristic of guaiacyl or syringyl units in lignin. In order to better understand the unique class of type 2 O-methyltransferases from monocots, we have characterized CCoAOMT from sorghum (Sorghum bicolor; SbCCoAOMT), including the SAM binary complex crystal structure and steady-state enzyme kinetics. Key amino acid residues were validated with sitedirected mutagenesis. Isothermal titration calorimetry data indicated a sequential binding mechanism for SbCCoAOMT, wherein SAM binds prior to caffeoyl-CoA, and the enzyme showed allosteric behavior with respect to it. 5-Hydroxyferuloyl-CoA was not a substrate for SbCCoAOMT. We propose a catalytic mechanism in which lysine-180 acts as a catalytic base and deprotonates the reactive hydroxyl group of caffeoyl-CoA. This deprotonation is facilitated by the coordination of the reactive hydroxyl group by Ca 2+ in the active site, lowering the pK a of the 39-OH group. Collectively, these data give a new perspective on the catalytic mechanism of CCoAOMTs and provide a basis for the functional diversity exhibited by type 2 plant OMTs that contain a unique insertion loop (residues 208-231) conferring affinity for phenylpropanoid-CoA thioesters. The structural model of SbCCoAOMT can serve as the basis for protein engineering approaches to enhance the nutritional, agronomic, and industrially relevant properties of sorghum.

show abstract

“…In rice, osdwarf4-1 and leaf inclination2 have been identified and shown to play roles in plant hormone responses that result in changes in leaf angle (Sakamoto et al 2006;Zhao et al 2010). Progress in identifying leaf angle QTL has been made in sorghum, the fifth most widely produced grain and forage crop, but a gene that regulates leaf angle has yet to be identified as has been done in maize and rice (Hart et al 2001;Gill et al 2014;Perez et al 2014;Xin et al 2015).…”

mentioning

confidence: 99%

Harnessing Genetic Variation in Leaf Angle to Increase Productivity of Sorghum bicolor

et al. 2015

View full text Add to dashboard Cite

The efficiency with which a plant intercepts solar radiation is determined primarily by its architecture. Understanding the genetic regulation of plant architecture and how changes in architecture affect performance can be used to improve plant productivity. Leaf inclination angle, the angle at which a leaf emerges with respect to the stem, is a feature of plant architecture that influences how a plant canopy intercepts solar radiation. Here we identify extensive genetic variation for leaf inclination angle in the crop plant Sorghum bicolor, a C4 grass species used for the production of grain, forage, and bioenergy. Multiple genetic loci that regulate leaf inclination angle were identified in recombinant inbred line populations of grain and bioenergy sorghum. Alleles of sorghum dwarf-3, a gene encoding a P-glycoprotein involved in polar auxin transport, are shown to change leaf inclination angle by up to 34°(0.59 rad). The impact of heritable variation in leaf inclination angle on light interception in sorghum canopies was assessed using functionalstructural plant models and field experiments. Smaller leaf inclination angles caused solar radiation to penetrate deeper into the canopy, and the resulting redistribution of light is predicted to increase the biomass yield potential of bioenergy sorghum by at least 3%. These results show that sorghum leaf angle is a heritable trait regulated by multiple loci and that genetic variation in leaf angle can be used to modify plant architecture to improve sorghum crop performance.KEYWORDS leaf angle; crop modeling; sorghum canopy; bioenergy sorghum; dwarf-3; P-glycoprotein; auxin transport S USTAINABLY increasing the productivity of crops on land currently used for agriculture without depleting natural resources is a global priority (Foley et al. 2011;Drewry et al. 2014). Improving the efficiency with which plants intercept solar radiation is one means to sustainably improve crop productivity. Leaf angle, or leaf erectness, is a plant canopy parameter that has drawn considerable attention because of the predicted improvement in photosynthetic efficiency and reduction in plant stress afforded by the redistribution of solar radiation from upper to lower levels of canopies (Tollenaar and Wu 1999;Duvick 2005;Murchie et al. 2009;Zhu et al. 2010;Murchie and Reynolds 2012;Drewry et al. 2014;Mansfield and Mumm 2014). Performance improvements predicted by theoretical models are corroborated by positive correlations between small leaf angles and cereal crop yields; post-green revolution rice cultivars have smaller leaf inclination angles and higher yields relative to their pre-green revolution predecessors (Yoshida 1972;Sinclair and Sheehy 1999;Sakamoto et al. 2006), and modern maize is also characterized by small inclination angles as a consequence of selection for increased grain yield in breeding programs (Duvick 2005;Lee and Tollenaar 2007;Hammer et al. 2009;Tian et al. 2011;Mansfield and Mumm 2014).Despite the association of leaf angle with increased productivity, its g...

show abstract

Yield Results and Stability Analysis from the Sorghum Regional Biomass Feedstock Trial

Cited by 57 publications

References 13 publications

Use of sewage sludge in bioenergy production—A case study on the effects on sorghum biomass production

Use of sewage sludge in bioenergy production—A case study on the effects on sorghum biomass production

The Structure and Catalytic Mechanism of Sorghum bicolor Caffeoyl-CoA O-Methyltransferase

Harnessing Genetic Variation in Leaf Angle to Increase Productivity of Sorghum bicolor

Contact Info

Product

Resources

About