ArticleAnnals of botany2010
Stem hypertrophic lenticels and secondary aerenchyma enable oxygen transport to roots of soybean in flooded soil.
Article in Annals of botany, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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26 citing papers in PubMed, 138 citations in OpenAlex.
- Morpho-anatomical changes and physio-biochemical responses of Carex siderosticta under water stress.Plant signaling & behavior · 2026Article
- Uncovering the Secrets of How Plants Adapt to Water Stress.Plant, cell & environment · 2026Review
- Assessment of functional trait variation in arid-zone plant families to evaluate indicator species for rehabilitation of degraded landscapes.Die Naturwissenschaften · 2026Article
- Adjustment of Respiration Strategies in Roots Contributes to the Waterlogging Resistance inInternational journal of molecular sciences · 2026Article
- Integrated morpho-physiological and transcriptomic dissection of waterlogging tolerance inFrontiers in plant science · 2026Article
- Above- and belowground linkages during extreme moisture excess: leveraging knowledge from natural ecosystems to better understand implications for row-crop agroecosystems.Journal of experimental botany · 2023Article
- Plant responses to limited aeration: Advances and future challenges.Plant direct · 2023Article
- Transcriptomic and metabolomic analyses reveal the potential mechanism of waterlogging resistance in cotton (Frontiers in plant science · 2023Article
- Transcriptomic responses of oil palm (Frontiers in plant science · 2023Article
- Understanding a Mechanistic Basis of ABA Involvement in Plant Adaptation to Soil Flooding: The Current Standing.Plants (Basel, Switzerland) · 2021Review
- Primary and secondary aerenchyma oxygen transportation pathways of Syzygium kunstleri (King) Bahadur & R. C. Gaur adventitious roots in hypoxic conditions.Scientific reports · 2021Article
- Different Waterlogging Depths Affect Spatial Distribution of Fine Root Growth forFrontiers in plant science · 2021Article
- Source of Oxygen Fed to Adventitious Roots ofPlants (Basel, Switzerland) · 2020Article
- Keep Calm and Survive: Adaptation Strategies to Energy Crisis in Fruit Trees under Root Hypoxia.Plants (Basel, Switzerland) · 2020Review
- The control of endopolygalacturonase expression by the sugarcane RAV transcription factor during aerenchyma formation.Journal of experimental botany · 2019Article
- Immunoprofiling of Cell Wall Carbohydrate Modifications During Flooding-Induced Aerenchyma Formation in Fabaceae Roots.Frontiers in plant science · 2019Article
- Article
- Flood tolerance in two tree species that inhabit both the Amazonian floodplain and the dry Cerrado savanna of Brazil.AoB PLANTS · 2018Article
- Sucrose supply from leaves is required for aerenchymatous phellem formation in hypocotyl of soybean under waterlogged conditions.Annals of botany · 2018Article
- Waterlogging tolerance, tissue nitrogen and oxygen transport in the forage legume Melilotus siculus: a comparison of nodulated and nitrate-fed plants.Annals of botany · 2018Article
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Authors and funding
5 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsAerenchyma provides a low-resistance O(2) transport pathway that enhances plant survival during soil flooding. When in flooded soil, soybean produces aerenchyma and hypertrophic stem lenticels. The aims of this study were to investigate O(2) dynamics in stem aerenchyma and evaluate O(2) supply via stem lenticels to the roots of soybean during soil flooding.
methodsOxygen dynamics in aerenchymatous stems were investigated using Clark-type O(2) microelectrodes, and O(2) transport to roots was evaluated using stable-isotope (18)O(2) as a tracer, for plants with shoots in air and roots in flooded sand or soil. Short-term experiments also assessed venting of CO(2) via the stem lenticels. KEY
resultsThe radial distribution of the O(2) partial pressure (pO(2)) was stable at 17 kPa in the stem aerenchyma 15 mm below the water level, but rapidly declined to 8 kPa at 200-300 microm inside the stele. Complete submergence of the hypertrophic lenticels at the stem base, with the remainder of the shoot still in air, resulted in gradual declines in pO(2) in stem aerenchyma from 17.5 to 7.6 kPa at 13 mm below the water level, and from 14.7 to 6.1 kPa at 51 mm below the water level. Subsequently, re-exposure of the lenticels to air caused pO(2) to increase again to 14-17 kPa at both positions within 10 min. After introducing (18)O(2) gas via the stem lenticels, significant (18)O(2) enrichment in water extracted from roots after 3 h was confirmed, suggesting that transported O(2) sustained root respiration. In contrast, slight (18)O(2) enrichment was detected 3 h after treatment of stems that lacked aerenchyma and lenticels. Moreover, aerenchyma accelerated venting of CO(2) from submerged tissues to the atmosphere.
conclusionsHypertrophic lenticels on the stem of soybean, just above the water surface, are entry points for O(2), and these connect to aerenchyma and enable O(2) transport into roots in flooded soil. Stems that develop aerenchyma thus serve as a 'snorkel' that enables O(2) movement from air to the submerged roots.
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