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Stalk sap nitrate test as a potential tool for nitrogen fertilizer recommendations for maize
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A multi-organ maize metabolic model connects temperature stress with energy production and reducing power generation
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Structure of maize BZR1-type β-amylase BAM8 provides new insights into its noncatalytic adaptation
Plant β-amylase (BAM) proteins play an essential role in growth, development, stress response, and hormone regulation. Despite their typical (β/α) 8 barrel structure as active catalysts in starch breakdown, catalytically inactive BAMs are implicated in diverse yet elusive functions in plants. Further, the noncatalytic BAM7/8 contain N-terminal BZR1 domains and were shown to be involved in the regulation of brassinosteroid signaling and possibly serve as sensors of yet an uncharacterized metabolic signal. While the structures of several catalytically active BAMs have been reported, structural characterization of the catalytically inactive BZR1-type BAMs remain unknown. Here, we determine the crystal structure of β-amylase domain of Zea mays BAM8/BES1/BZR1-5 and provide comprehensive insights into its noncatalytic adaptation. Using structural-guided comparison combined with biochemical analysis and molecular dynamics simulations, we revealed conformational changes in multiple distinct highly conserved regions resulting in rearrangement of the binding pocket. Altogether, this study adds a new layer of understanding to starch breakdown mechanism and elucidates the acquired adjustments of noncatalytic BZR1-type BAMs as putative regulatory domains and/or metabolic sensors in plants.
Subfield maize yield prediction improves when in-season crop water deficit is included in remote sensing imagery-based models
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Maize cultivars relieve health risks of Cd-Polluted Soils: In vitro Cd bioaccessibility and bioavailability
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ZmGRAS46 negatively regulates flowering time in maize
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The carbon and nitrogen cycle impacts of reverting perennial bioenergy switchgrass to an annual maize crop rotation
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Leveraging GCxGC-TOFMS to explore plant-soil-microbiome interactions in Maize [Slides]
Abstract not provided.
Complementary Phenotyping of Maize Root System Architecture by Root Pulling Force and X-Ray Imaging
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Determining density of maize canopy. 3: Temporal considerations
Multispectral scanner data were collected in two flights over ground cover plots at an altitude of 305 m. Eight ground reflectance panels in close proximity to the ground cover plots were used to normalize the scanner data obtained on different dates. Separate prediction equations were obtained for both flight dates for all eleven reflective wavelength bands of the multispectral scanner. Ratios of normalized scanner data were related to leaf area index over time. Normalized scanner data were used to plot relative reflectance versus wavelength for the ground cover plots. Spectral response curves were similar to those for bare soil and green vegetation as determined by laboratory measurements. The spectral response curves from the normalized scanner data indicated that reflectance in the 0.72 to 1.3 micron wavelength range increased as leaf area index increased. A decrease in reflectance was observed in the 0.65 micron chlorophyll absorption band as leaf area index increased.
Regions of differential cell elongation and mitosis, and root meristem morphology in different tissues of geotropically stimulated maize root apices
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