مورد إلكتروني
A microscale model for combined CO2 diffusion and photosynthesis in leaves
| العنوان: | A microscale model for combined CO2 diffusion and photosynthesis in leaves |
|---|---|
| المصدر: | ISSN: 1932-6203 |
| بيانات النشر: | 2012 |
| تفاصيل مُضافة: | Ho, Q.T. Verboven, P. Yin, X. Struik, P.C. Nicolaï, B.M. |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | Transport of CO2 in leaves was investigated by combining a 2-D, microscale CO2 transport model with photosynthesis kinetics in wheat (Triticum aestivum L.) leaves. The biophysical microscale model for gas exchange featured an accurate geometric representation of the actual 2-D leaf tissue microstructure and accounted for diffusive mass exchange of CO2. The resulting gas transport equations were coupled to the biochemical Farquhar-von Caemmerer-Berry model for photosynthesis. The combined model was evaluated using gas exchange and chlorophyll fluorescence measurements on wheat leaves. In general a good agreement between model predictions and measurements was obtained, but a discrepancy was observed for the mesophyll conductance at high CO2 levels and low irradiance levels. This may indicate that some physiological processes related to photosynthesis are not incorporated in the model. The model provided detailed insight into the mechanisms of gas exchange and the effects of changes in ambient CO2 concentration or photon flux density on stomatal and mesophyll conductance. It represents an important step forward to study CO2 diffusion coupled to photosynthesis at the leaf tissue level, taking into account the leaf's actual microstructure. |
| مصطلحات الفهرس: | biochemical-model, c-3 plants, carbon-dioxide, chlorophyll fluorescence, electron-transport, gas-exchange, internal conductance, leaf photosynthesis, mesophyll conductance, temperature response, info:eu-repo/semantics/article, Article/Letter to editor, info:eu-repo/semantics/publishedVersion |
| URL: | |
| الإتاحة: | Open access content. Open access content info:eu-repo/semantics/openAccess Wageningen University & Research |
| ملاحظة: | application/pdf PLoS ONE 7 (2012) 11 ISSN: 1932-6203 ISSN: 1932-6203 English |
| أرقام أخرى: | NLWUP oai:library.wur.nl:wurpubs/430235 https://research.wur.nl/en/publications/a-microscale-model-for-combined-co2-diffusion-and-photosynthesisTest- 10.1371/journal.pone.0048376 1200334664 |
| المصدر المساهم: | WUR STAFF PUBNS From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1200334664 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |