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Reduced frequency of lateral root branching improves N capture from low-N soils in maize.

Zhan A, Lynch JP - J. Exp. Bot. (2015)

Bottom Line: In low-N mesocosms, the FL phenotype had substantially reduced root respiration and greater rooting depth than the MS phenotype.Our results are consistent with the hypothesis that sparse but long lateral roots improve N capture from low-N soils.These results with maize probably pertain to other species.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China Department of Plant Science, The Pennsylvania State University, University Park, PA 16802, USA.

No MeSH data available.


Correlation of rooting depth (D95) and lateral root-branching density in crown roots (A), primary roots (B), and seminal roots (C) in the field in RS and SA at anthesis. Each point is the mean of four replicates of each genotype.
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Figure 8: Correlation of rooting depth (D95) and lateral root-branching density in crown roots (A), primary roots (B), and seminal roots (C) in the field in RS and SA at anthesis. Each point is the mean of four replicates of each genotype.

Mentions: Low N decreased root length density in both RS and SA (Fig. 7A–D). Under low-N conditions, FL lines had greater root length density in deep soil layers than MS lines (Fig. 7C, D). This result is also evident from the D95 data. Under low N in the field, FL lines had significantly greater D95 than MS lines (Fig. 7C-D). FL lines had a D95 value of 57.9cm in RS and 36.9cm in SA compared to 49.6cm and 30.8cm for MS lines. Negative relationships between D95 and lateral root-branching density in crown roots, primary roots, and seminal roots were found in both RS and SA (Fig. 8A–C).


Reduced frequency of lateral root branching improves N capture from low-N soils in maize.

Zhan A, Lynch JP - J. Exp. Bot. (2015)

Correlation of rooting depth (D95) and lateral root-branching density in crown roots (A), primary roots (B), and seminal roots (C) in the field in RS and SA at anthesis. Each point is the mean of four replicates of each genotype.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4378636&req=5

Figure 8: Correlation of rooting depth (D95) and lateral root-branching density in crown roots (A), primary roots (B), and seminal roots (C) in the field in RS and SA at anthesis. Each point is the mean of four replicates of each genotype.
Mentions: Low N decreased root length density in both RS and SA (Fig. 7A–D). Under low-N conditions, FL lines had greater root length density in deep soil layers than MS lines (Fig. 7C, D). This result is also evident from the D95 data. Under low N in the field, FL lines had significantly greater D95 than MS lines (Fig. 7C-D). FL lines had a D95 value of 57.9cm in RS and 36.9cm in SA compared to 49.6cm and 30.8cm for MS lines. Negative relationships between D95 and lateral root-branching density in crown roots, primary roots, and seminal roots were found in both RS and SA (Fig. 8A–C).

Bottom Line: In low-N mesocosms, the FL phenotype had substantially reduced root respiration and greater rooting depth than the MS phenotype.Our results are consistent with the hypothesis that sparse but long lateral roots improve N capture from low-N soils.These results with maize probably pertain to other species.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China Department of Plant Science, The Pennsylvania State University, University Park, PA 16802, USA.

No MeSH data available.