Primary and secondary aerenchyma oxygen transportation pathways of Syzygium kunstleri (King) Bahadur & R. C. Gaur adventitious roots in hypoxic conditions
Abstract Some plant species develop aerenchyma to avoid anaerobic environments. In Syzygium kunstleri (King) Bahadur & R. C. Gaur, both primary and secondary aerenchyma were observed in adventitious roots under hypoxic conditions. We clarified the function of and relationship between primary and...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2021-02-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-84183-z |
| _version_ | 1818345970160631808 |
|---|---|
| author | Hong-Duck Sou Masaya Masumori Takashi Yamanoshita Takeshi Tange |
| author_facet | Hong-Duck Sou Masaya Masumori Takashi Yamanoshita Takeshi Tange |
| author_sort | Hong-Duck Sou |
| collection | DOAJ |
| description | Abstract Some plant species develop aerenchyma to avoid anaerobic environments. In Syzygium kunstleri (King) Bahadur & R. C. Gaur, both primary and secondary aerenchyma were observed in adventitious roots under hypoxic conditions. We clarified the function of and relationship between primary and secondary aerenchyma. To understand the function of primary and secondary aerenchyma in adventitious roots, we measured changes in primary and secondary aerenchyma partial pressure of oxygen (pO2) after injecting nitrogen (N2) into the stem 0–3 cm above the water surface using Clark-type oxygen microelectrodes. Following N2 injection, a decrease in pO2 was observed in the primary aerenchyma, secondary aerenchyma, and rhizosphere. Oxygen concentration in the primary aerenchyma, secondary aerenchyma, and rhizosphere also decreased after the secondary aerenchyma was removed from near the root base. The primary and secondary aerenchyma are involved in oxygen transport, and in adventitious roots, they participate in the longitudinal movement of oxygen from the root base to root tip. As cortex collapse occurs from secondary growth, the secondary aerenchyma may support or replace the primary aerenchyma as the main oxygen transport system under hypoxic conditions. |
| first_indexed | 2024-12-13T17:10:50Z |
| format | Article |
| id | doaj.art-04f7a36d70884e5c88cbfd215a950600 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-13T17:10:50Z |
| publishDate | 2021-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-04f7a36d70884e5c88cbfd215a9506002022-12-21T23:37:34ZengNature PortfolioScientific Reports2045-23222021-02-0111111210.1038/s41598-021-84183-zPrimary and secondary aerenchyma oxygen transportation pathways of Syzygium kunstleri (King) Bahadur & R. C. Gaur adventitious roots in hypoxic conditionsHong-Duck Sou0Masaya Masumori1Takashi Yamanoshita2Takeshi Tange3Urban Forest Research Center, National Institute of Forest ScienceGraduate School of Agricultural and Life Sciences, The University of TokyoGraduate School of Agricultural and Life Sciences, The University of TokyoGraduate School of Agricultural and Life Sciences, The University of TokyoAbstract Some plant species develop aerenchyma to avoid anaerobic environments. In Syzygium kunstleri (King) Bahadur & R. C. Gaur, both primary and secondary aerenchyma were observed in adventitious roots under hypoxic conditions. We clarified the function of and relationship between primary and secondary aerenchyma. To understand the function of primary and secondary aerenchyma in adventitious roots, we measured changes in primary and secondary aerenchyma partial pressure of oxygen (pO2) after injecting nitrogen (N2) into the stem 0–3 cm above the water surface using Clark-type oxygen microelectrodes. Following N2 injection, a decrease in pO2 was observed in the primary aerenchyma, secondary aerenchyma, and rhizosphere. Oxygen concentration in the primary aerenchyma, secondary aerenchyma, and rhizosphere also decreased after the secondary aerenchyma was removed from near the root base. The primary and secondary aerenchyma are involved in oxygen transport, and in adventitious roots, they participate in the longitudinal movement of oxygen from the root base to root tip. As cortex collapse occurs from secondary growth, the secondary aerenchyma may support or replace the primary aerenchyma as the main oxygen transport system under hypoxic conditions.https://doi.org/10.1038/s41598-021-84183-z |
| spellingShingle | Hong-Duck Sou Masaya Masumori Takashi Yamanoshita Takeshi Tange Primary and secondary aerenchyma oxygen transportation pathways of Syzygium kunstleri (King) Bahadur & R. C. Gaur adventitious roots in hypoxic conditions Scientific Reports |
| title | Primary and secondary aerenchyma oxygen transportation pathways of Syzygium kunstleri (King) Bahadur & R. C. Gaur adventitious roots in hypoxic conditions |
| title_full | Primary and secondary aerenchyma oxygen transportation pathways of Syzygium kunstleri (King) Bahadur & R. C. Gaur adventitious roots in hypoxic conditions |
| title_fullStr | Primary and secondary aerenchyma oxygen transportation pathways of Syzygium kunstleri (King) Bahadur & R. C. Gaur adventitious roots in hypoxic conditions |
| title_full_unstemmed | Primary and secondary aerenchyma oxygen transportation pathways of Syzygium kunstleri (King) Bahadur & R. C. Gaur adventitious roots in hypoxic conditions |
| title_short | Primary and secondary aerenchyma oxygen transportation pathways of Syzygium kunstleri (King) Bahadur & R. C. Gaur adventitious roots in hypoxic conditions |
| title_sort | primary and secondary aerenchyma oxygen transportation pathways of syzygium kunstleri king bahadur r c gaur adventitious roots in hypoxic conditions |
| url | https://doi.org/10.1038/s41598-021-84183-z |
| work_keys_str_mv | AT hongducksou primaryandsecondaryaerenchymaoxygentransportationpathwaysofsyzygiumkunstlerikingbahadurrcgauradventitiousrootsinhypoxicconditions AT masayamasumori primaryandsecondaryaerenchymaoxygentransportationpathwaysofsyzygiumkunstlerikingbahadurrcgauradventitiousrootsinhypoxicconditions AT takashiyamanoshita primaryandsecondaryaerenchymaoxygentransportationpathwaysofsyzygiumkunstlerikingbahadurrcgauradventitiousrootsinhypoxicconditions AT takeshitange primaryandsecondaryaerenchymaoxygentransportationpathwaysofsyzygiumkunstlerikingbahadurrcgauradventitiousrootsinhypoxicconditions |