Abstract
Abstract Efficient acquisition and use of available phosphorus from the soil is crucial for plant growth, development, and yield. With an ever‐increasing acreage of croplands with suboptimal available soil phosphorus, genetic improvement of sorghum germplasm for enhanced phosphorus acquisition from soil is crucial to increasing agricultural output and reducing inputs, while confronted with a growing world population and uncertain climate. Sorghum bicolor is a globally important commodity for food, fodder, and forage. Known for robust tolerance to heat, drought, and other abiotic stresses, its capacity for optimal phosphorus use efficiency (PUE) is still being investigated for optimized root system architectures (RSA). Whilst a few RSA‐influencing genes have been identified in sorghum and other grasses, the epigenetic impact on expression and tissue‐specific activation of candidate PUE genes remains elusive. Here, we present transcriptomic, epigenetic, and regulatory network profiling of RSA modulation in the BTx623 sorghum background in response to limiting phosphorus (LP) conditions. We show that during LP, sorghum RSA is remodeled to increase root length and surface area, likely enhancing its ability to acquire P. Global DNA 5‐methylcytosine and H3K4 and H3K27 trimethylation levels decrease in response to LP, while H3K4me3 peaks and DNA hypomethylated regions contain recognition motifs of numerous developmental and nutrient responsive transcription factors that display disparate expression patterns between different root tissues (primary root apex, elongation zone, and lateral root apex).
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Claims 9
Claim · model-written summary
Limiting phosphorus remodeled sorghum roots to increase root length.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during LP, sorghum RSA is remodeled to increase root length and surface area, likely enhancing its ability to acquire P”
Claim · model-written summary
Limiting phosphorus remodeled sorghum roots to increase surface area.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during LP, sorghum RSA is remodeled to increase root length and surface area, likely enhancing its ability to acquire P”
Claim · model-written summary
The root remodeling likely enhanced sorghum phosphorus acquisition.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during LP, sorghum RSA is remodeled to increase root length and surface area, likely enhancing its ability to acquire P”
Claim · model-written summary
Global DNA 5‐methylcytosine decreased under limiting phosphorus.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“Global DNA 5‐methylcytosine and H3K4 and H3K27 trimethylation levels decrease in response to LP”
Claim · model-written summary
H3K4 decreased under limiting phosphorus.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“Global DNA 5‐methylcytosine and H3K4 and H3K27 trimethylation levels decrease in response to LP”
Claim · model-written summary
H3K27 trimethylation levels decreased under limiting phosphorus.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“Global DNA 5‐methylcytosine and H3K4 and H3K27 trimethylation levels decrease in response to LP”
Claim · model-written summary
H3K4me3 peaks contained recognition motifs for developmental and nutrient responsive transcription factors.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“H3K4me3 peaks and DNA hypomethylated regions contain recognition motifs of numerous developmental and nutrient responsive transcription factors that display disparate expression patterns between different root tissues (primary root apex, elongation zone, and lateral root apex)”
Claim · model-written summary
DNA hypomethylated regions contained recognition motifs for developmental and nutrient responsive transcription factors.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“H3K4me3 peaks and DNA hypomethylated regions contain recognition motifs of numerous developmental and nutrient responsive transcription factors that display disparate expression patterns between different root tissues (primary root apex, elongation zone, and lateral root apex)”
Claim · model-written summary
The transcription factors showed disparate expression patterns among root tissues.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Sorghum”
e0“H3K4me3 peaks and DNA hypomethylated regions contain recognition motifs of numerous developmental and nutrient responsive transcription factors that display disparate expression patterns between different root tissues (primary root apex, elongation zone, and lateral root apex)”
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