Sorghum bicolor is a drought-resilient facultative short-day C4 grass that is grown for grain, forage, and biomass. Adaptation of sorghum for grain production in temperate regions resulted in the ...selection of mutations in Maturity loci (Ma1 -Ma6) that reduced photoperiod sensitivity and resulted in earlier flowering in long days. Prior studies identified the genes associated with Ma1 (PRR37), Ma3 (PHYB), Ma5 (PHYC) and Ma6 (GHD7) and characterized their role in the flowering time regulatory pathway. The current study focused on understanding the function and identity of Ma2. Ma2 delayed flowering in long days by selectively enhancing the expression of SbPRR37 (Ma1) and SbCO, genes that co-repress the expression of SbCN12, a source of florigen. Genetic analysis identified epistatic interactions between Ma2 and Ma4 and located QTL corresponding to Ma2 on SBI02 and Ma4 on SBI10. Positional cloning and whole genome sequencing identified a candidate gene for Ma2, Sobic.002G302700, which encodes a SET and MYND (SYMD) domain lysine methyltransferase. Eight sorghum genotypes previously identified as recessive for Ma2 contained the mutated version of Sobic.002G302700 present in 80M (ma2) and one additional putative recessive ma2 allele was identified in diverse sorghum accessions.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
CrSiTe3 has attracted recent interest as a candidate single-layer ferromagnetic semiconductor, but relatively little is known about the bulk properties of this material. Here, we report ...single-crystal X-ray diffraction, magnetic properties, thermal conductivity, vibrational, and optical spectroscopies and compare our findings with complementary electronic structure and lattice dynamics principles calculations. The high temperature paramagnetic phase is characterized by strong spin-lattice interactions that give rise to glassy behavior, negative thermal expansion, and an optical response that reveals that CrSiTe3 is an indirect gap semiconductor with indirect and direct band gaps at 0.4 and 1.2 eV, respectively. Measurements of the phonons across the 33 K ferromagnetic transition provide additional evidence for strong coupling between the magnetic and lattice degrees of freedom. The Si-Te stretching and Te displacement modes are sensitive to the magnetic ordering transition, a finding that we discuss in terms of the superexchange mechanism. Spin-lattice coupling constants are also extracted.
Sorghum bicolor is a drought‐resilient C4 grass used for production of grain, forage, sugar, and biomass. Sorghum genotypes capable of accumulating high levels of stem sucrose have solid stems that ...contain low levels of aerenchyma. The D‐locus on SBI06 modulates the extent of aerenchyma formation in sorghum stems and leaf midribs. A QTL aligned with this locus was identified and fine‐mapped in populations derived from BTx623*IS320c, BTx623*R07007, and BTx623*Standard broomcorn. Analysis of coding polymorphisms in the fine‐mapped D‐locus showed that genotypes that accumulate low levels of aerenchyma encode a truncated NAC transcription factor (Sobic.006G147400, SbNAC_d1), whereas parental lines that accumulate higher levels of stem aerenchyma encode full‐length NAC TFs (SbNAC‐D). During vegetative stem development, aerenchyma levels are low in nonelongated stem internodes, internode growing zones, and nodes. Aerenchyma levels increase in recently elongated internodes starting at the top of the internode near the center of the stem. SbNAC_D was expressed at low levels in nonelongated internodes and internode growing zones and at higher levels in regions of stem internodes that form aerenchyma. SbXCP1, a gene encoding a cysteine protease involved in programmed cell death, was induced in SbNAC_D genotypes in parallel with aerenchyma formation in sorghum stems but not in SbNAC_d1 genotypes. Several sweet sorghum genotypes encode the recessive SbNAC_d1 allele and have low levels of stem aerenchyma. Based on these results, we propose that SbNAC_D is the D‐gene identified by Hilton (1916) and that allelic variation in SbNAC_D modulates the extent of aerenchyma formation in sorghum stems.
Objectives
We explored differences in fetal alcohol spectrum disorders (FASD) knowledge, attitudes, and behaviors across six groups of professionals in key position to provide primary and secondary ...prevention efforts (physicians, educators, correctional staff, social workers, public health nurses, and substance abuse counselors).
Methods
Achieving a 60.1% response rate, 2,292 professionals returned surveys, providing data on basic knowledge of FAS, FASD-associated risks and cognitive deficits, and willingness to confront and recommend treatment to alcohol-consuming pregnant women.
Results
Across groups, findings revealed ample FASD knowledge and willingness to confront and recommend treatment to alcohol-consuming pregnant women that increases as consumption becomes more frequent and severe. However, results revealed significant between-group differences data that provide valuable guidance for targeted future FASD education efforts.
Conclusions
Public health initiatives regarding FASD have been effective in increasing knowledge among a broad range of professionals. However, between-group differences indicate the need for targeted, discipline-specific interventions. These differences highlight the need for all professional groups to provide a consistent public health message regarding maternal alcohol consumption.
Picturing the future of food Casto, Anna L.; Schuhl, Haley; Tovar, Jose C. ...
Plant phenome journal,
2021, Letnik:
4, Številka:
1
Journal Article
Recenzirano
Odprti dostop
High‐throughput phenotyping (HTP) has emerged as one of the most exciting and rapidly evolving spaces within plant science. The successful application of phenotyping technologies will facilitate ...increases in agricultural productivity. High‐throughput phenotyping research is interdisciplinary and may involve biologists, engineers, mathematicians, physicists, and computer scientists. Here we describe the need for additional interest in HTP and offer a primer for those looking to engage with the HTP community. This is a high‐level overview of HTP technologies and analysis methodologies, which highlights recent progress in applying HTP to foundational research, identification of biotic and abiotic stress, breeding and crop improvement, and commercial and production processes. We also point to the opportunities and challenges associated with incorporating HTP across food production to sustainably meet the current and future global food supply requirements.
Core Ideas
This review highlights use of high‐throughput phenotyping across the food system.
This review provides a summary of high‐throughput phenotyping technologies.
This review identifies areas of phenomics that need more community attention.
Family perspectives on short-term recovery after spinal fusion for neuromuscular scoliosis are essential for improving patient outcomes. Semistructured interviews were conducted with 18 families of ...children within 3 months after spinal fusion performed August 2017 to January 2019 at a children’s hospital. Interviews were recorded, transcribed, and coded line-by-line by 2 independent reviewers using grounded theory to identify themes. Five themes emerged among families when reflecting back on the postoperative recovery: (1) communicating and making shared decisions regarding postoperative care in a patient- and family-centered manner, (2) setting hospital discharge goals and being ready for discharge, (3) planning for transportation from hospital to home, (4) acquiring supports for caregiving at home after discharge, and (5) anticipating a long recovery at home. Important family perceptions were elicited about the recovery of children from spinal fusion for neuromuscular scoliosis that will inform better perioperative planning for clinicians, future patients, and their families.
Objective:
This study was designed to determine the effects of hearing loss, aviation headset type, flight workload complexity, and communication signal quality on pilots’ performance in an army ...rotary-wing flight simulator.
Background:
To maintain flight status, army aviators who do not meet current audiometric standards require a hearing loss waiver, which is based on speech intelligibility in quiet conditions. Because hearing loss characteristics of hearing-impaired aviators can vary greatly, and because performance is likely also influenced by degree of flight workload and communication demand, it was expected that performance among hearing-impaired aviators would also vary.
Method:
Participants were 20 army helicopter pilots. Pilots flew three flights in a full motion-based helicopter simulator, with a different headset configuration and varying flight workload levels and communication signal quality characterizing each flight. Objective flight performance parameters of heading, altitude, and airspeed deviation and air traffic control command read-backs were measured.
Results:
Statistically significant results suggest that high levels of flight workload, especially in combination with poor communications signal quality, lead to deficits in flight performance and speech intelligibility.
Conclusion:
These results support a conclusion that factors other than hearing thresholds and speech intelligibility in quiet should be considered when evaluating helicopter pilots’ flight safety. The results also support a recommendation that hearing-impaired pilots use assistive communication technology and not fly with strictly passive headsets.
Application:
The combined effects of flight environment with individual hearing levels should be considered when making recommendations concerning continued aviation flight status and those concerning communications headsets used in high-noise cockpits.
Sweet sorghums were identified that accumulate up to ~9% of their total stem dry weight as starch. Starch accumulated preferentially in stem pith parenchyma in close proximity to vascular bundles. ...Stem starch accumulated slowly between floral initiation and anthesis and more rapidly between anthesis and 43 days post‐anthesis before declining in parallel with tiller outgrowth. Genes involved in stem starch metabolism were identified through phylogenetic approaches and RNA‐seq analysis of Della stem gene expression during the starch accumulation phase of development. Genes differentially expressed in stems were identified that are involved in starch biosynthesis (i.e., AGPase SS/LS, starch synthases, starch‐branching enzymes), degradation (i.e., glucan‐water dikinase, β‐amylase, disproportionating enzyme, alpha‐glucan phosphorylase) and amyloplast sugar transport (glucose‐6‐P translocator). Transcripts encoding AGPase SS and LS subunits with plastid localization were differentially induced during stem starch accumulation indicating that ADP‐glucose for starch biosynthesis is primarily generated in stem plastids. Cytosolic heteroglucan metabolism may play a role in stem sucrose/starch accumulation because genes encoding cytosolic forms of the disproportionating enzyme and alpha‐glucan phosphorylase were induced in parallel with stem sucrose/starch accumulation. Information on the stem starch pathway obtained in this study will be useful for engineering sorghum stems with elevated starch thereby improving forage quality and the efficiency of biomass conversion to biofuels and bio‐products.
To determine the direct costs of hospital care of acute ischemic stroke in a large Italian hospital, and to identify the main components of such costs.
Cost containment in stroke care requires an ...up-to-date assessment of expenditures in the different areas of stroke management. However, costs may vary among countries because of different health system organizations.
All patients with ischemic stroke admitted during 1996 were considered. Total cost was the sum of a daily component, reflecting personnel wages and general care, and an ancillary component, reflecting mostly investigations and treatments. The real costs were used, not fixed charges.
We included 245 patients, with a mean length of stay (LOS) of 13.1+/-7.0 days, and an in-hospital case fatality rate of 8.2%. The mean total cost per patient was 5,087,000+/-2,536,000 Italian Lira (LIT; $3,289+/-$1,640), with a mean cost per day of 388,000 LIT ($251). Approximately 80% of total costs were due to the daily component and 20% to the ancillary component. A multiple linear regression model of length of stay, which determines the daily cost, showed that the Rankin score at entry, the clinical syndrome type, and the destination at discharge independently contributed to LOS. A second linear regression model showed that younger age and longer LOS significantly increased ancillary costs.
The containment of hospital costs of ischemic stroke may be achieved mostly through measures that reduce LOS, such as effective treatments and a quicker deployment.
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