Root hairs enhance Arabidopsis seedling survival upon soil disruption

Scientific Reports
Hee-Seung Choi, Hyung-Taeg Cho

Abstract

Root hairs form a substantial portion of the root surface area. Compared with their nutritional function, the physical function of root hairs has been poorly characterised. This study investigates the physical role of root hairs of Arabidopsis thaliana seedlings in interaction of the root with water and soil and in plant survival upon soil disruption. Five transgenic lines with different root hair lengths were used to assess the physical function of root hairs. Upon soil disruption by water falling from a height (mimicking rainfall), long-haired lines showed much higher anchorage rates than short-haired lines. The root-pulling test revealed that a greater amount of soil adhered to long-haired roots than to short-haired roots. When seedlings were pulled out and laid on the soil surface for 15 d, survival rates of long-haired seedlings were higher than those of short-haired seedlings. Moreover, the water holding capacity of roots was much greater among long-haired seedlings than short-haired seedlings. These results suggest that root hairs play a significant role in plant survival upon soil disruption which could be fatal for young seedlings growing on thin soil surface with a short primary root and root hairs as the only soil an...Continue Reading

References

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Citations

Sep 28, 2020·Trends in Plant Science·Thanyakorn RongsawatHervé Sentenac
May 21, 2021·Biochemical Society Transactions·Manuela Désirée BienertGerd Patrick Bienert

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Datasets Mentioned

BETA
AT1G12560
AT1G27740
AT3G23030

Methods Mentioned

BETA
transgenic
transgenics
PCR

Software Mentioned

ImageJ

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