Short term changes in methanol emission and pectin methylesterase activity are not directly affected by light in <i>Lycopersicon esculentum</i>
Plants are an important source of atmospheric methanol (MeOH), the second most abundant organic gas after methane. Factors regulating phytogenic MeOH production are not well constrained in current MeOH emission models. Previous studies have indicated that light may have a direct influence on MeOH pr...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2011-04-01
|
| Series: | Biogeosciences |
| Online Access: | http://www.biogeosciences.net/8/1023/2011/bg-8-1023-2011.pdf |
| _version_ | 1828369385054535680 |
|---|---|
| author | M. T. Lerdau J. E. Mak M. P. Timko P. Y. Oikawa L. Li |
| author_facet | M. T. Lerdau J. E. Mak M. P. Timko P. Y. Oikawa L. Li |
| author_sort | M. T. Lerdau |
| collection | DOAJ |
| description | Plants are an important source of atmospheric methanol (MeOH), the second most abundant organic gas after methane. Factors regulating phytogenic MeOH production are not well constrained in current MeOH emission models. Previous studies have indicated that light may have a direct influence on MeOH production. As light is known to regulate cell wall expansion, it was predicted that light would stimulate MeOH production through the pectin methylesterase (PME) pathway. MeOH emissions normalized for stomatal conductance (<i>g</i><sub>s</sub>) did not, however, increase with light over short time scales (20–30 min). After experimentally controlling for <i>g</i><sub>s</sub> and temperature, no light activation of PME activity or MeOH emission was observed. The results clearly demonstrate that light does not directly influence short-term changes in MeOH production and emission. Our data suggest that substrate limitation may be important in regulating MeOH production over short time scales. Future investigation of the long-term impacts of light on MeOH production may increase understanding of MeOH emission dynamics at the seasonal time scale. |
| first_indexed | 2024-04-14T06:23:10Z |
| format | Article |
| id | doaj.art-2b56eb2cc2eb4db2ad965c18f417e046 |
| institution | Directory Open Access Journal |
| issn | 1726-4170 1726-4189 |
| language | English |
| last_indexed | 2024-04-14T06:23:10Z |
| publishDate | 2011-04-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Biogeosciences |
| spelling | doaj.art-2b56eb2cc2eb4db2ad965c18f417e0462022-12-22T02:07:56ZengCopernicus PublicationsBiogeosciences1726-41701726-41892011-04-01841023103010.5194/bg-8-1023-2011Short term changes in methanol emission and pectin methylesterase activity are not directly affected by light in <i>Lycopersicon esculentum</i>M. T. LerdauJ. E. MakM. P. TimkoP. Y. OikawaL. LiPlants are an important source of atmospheric methanol (MeOH), the second most abundant organic gas after methane. Factors regulating phytogenic MeOH production are not well constrained in current MeOH emission models. Previous studies have indicated that light may have a direct influence on MeOH production. As light is known to regulate cell wall expansion, it was predicted that light would stimulate MeOH production through the pectin methylesterase (PME) pathway. MeOH emissions normalized for stomatal conductance (<i>g</i><sub>s</sub>) did not, however, increase with light over short time scales (20–30 min). After experimentally controlling for <i>g</i><sub>s</sub> and temperature, no light activation of PME activity or MeOH emission was observed. The results clearly demonstrate that light does not directly influence short-term changes in MeOH production and emission. Our data suggest that substrate limitation may be important in regulating MeOH production over short time scales. Future investigation of the long-term impacts of light on MeOH production may increase understanding of MeOH emission dynamics at the seasonal time scale.http://www.biogeosciences.net/8/1023/2011/bg-8-1023-2011.pdf |
| spellingShingle | M. T. Lerdau J. E. Mak M. P. Timko P. Y. Oikawa L. Li Short term changes in methanol emission and pectin methylesterase activity are not directly affected by light in <i>Lycopersicon esculentum</i> Biogeosciences |
| title | Short term changes in methanol emission and pectin methylesterase activity are not directly affected by light in <i>Lycopersicon esculentum</i> |
| title_full | Short term changes in methanol emission and pectin methylesterase activity are not directly affected by light in <i>Lycopersicon esculentum</i> |
| title_fullStr | Short term changes in methanol emission and pectin methylesterase activity are not directly affected by light in <i>Lycopersicon esculentum</i> |
| title_full_unstemmed | Short term changes in methanol emission and pectin methylesterase activity are not directly affected by light in <i>Lycopersicon esculentum</i> |
| title_short | Short term changes in methanol emission and pectin methylesterase activity are not directly affected by light in <i>Lycopersicon esculentum</i> |
| title_sort | short term changes in methanol emission and pectin methylesterase activity are not directly affected by light in i lycopersicon esculentum i |
| url | http://www.biogeosciences.net/8/1023/2011/bg-8-1023-2011.pdf |
| work_keys_str_mv | AT mtlerdau shorttermchangesinmethanolemissionandpectinmethylesteraseactivityarenotdirectlyaffectedbylightinilycopersiconesculentumi AT jemak shorttermchangesinmethanolemissionandpectinmethylesteraseactivityarenotdirectlyaffectedbylightinilycopersiconesculentumi AT mptimko shorttermchangesinmethanolemissionandpectinmethylesteraseactivityarenotdirectlyaffectedbylightinilycopersiconesculentumi AT pyoikawa shorttermchangesinmethanolemissionandpectinmethylesteraseactivityarenotdirectlyaffectedbylightinilycopersiconesculentumi AT lli shorttermchangesinmethanolemissionandpectinmethylesteraseactivityarenotdirectlyaffectedbylightinilycopersiconesculentumi |