Spectral and dose dependence of light-induced ion flux responses from maize leaves and their involvement in leaf expansion growth
Само за регистроване кориснике
2007
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Two types of segments (intact leaf tissue and isolated mesophyll tissue respectively) were isolated from basal (still growing) and tip (non-growing) maize leaf regions. The leaf segments were exposed to different light qualities (blue or red light) and quantities, and net fluxes of K+, Ca2+ and H+ were measured non-invasively using ion-selective vibrating microelectrodes (the MIFF technique). A clear dose dependency of all ion flux responses on both red (RL) and blue (BL) light fluence rate was found. We provide evidence that light-induced K+ flux kinetics are different between growing and non-growing tissues and attribute this difference to the direct involvement of RL-induced K+ flux in turgor-driven leaf expansion growth controlled by the epidermis, as well as to the charge-balancing role of K+ in the leaf mesophyll. Generally, BL was much more efficient in stimulating K+ uptake in the growing basal region compared with RL. We also show a much stronger influence of RL on Ca2+ fluxes... in the basal region compared with BL, which argues in favor of the importance of RL in Ca2+ signaling during leaf growth.
Кључне речи:
Zea mays L. / photosynthesis / light / ion-selective microelectrodes / ion fluxes / expansion growthИзвор:
Plant and Cell Physiology, 2007, 48, 4, 598-605Издавач:
- Oxford Univ Press, Oxford
DOI: 10.1093/pcp/pcm032
ISSN: 0032-0781
PubMed: 17329321
WoS: 000246664900004
Scopus: 2-s2.0-34250375225
Институција/група
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Živanović, Branka D. AU - Cuin, Tracey Ann AU - Shabala, Sergey PY - 2007 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/232 AB - Two types of segments (intact leaf tissue and isolated mesophyll tissue respectively) were isolated from basal (still growing) and tip (non-growing) maize leaf regions. The leaf segments were exposed to different light qualities (blue or red light) and quantities, and net fluxes of K+, Ca2+ and H+ were measured non-invasively using ion-selective vibrating microelectrodes (the MIFF technique). A clear dose dependency of all ion flux responses on both red (RL) and blue (BL) light fluence rate was found. We provide evidence that light-induced K+ flux kinetics are different between growing and non-growing tissues and attribute this difference to the direct involvement of RL-induced K+ flux in turgor-driven leaf expansion growth controlled by the epidermis, as well as to the charge-balancing role of K+ in the leaf mesophyll. Generally, BL was much more efficient in stimulating K+ uptake in the growing basal region compared with RL. We also show a much stronger influence of RL on Ca2+ fluxes in the basal region compared with BL, which argues in favor of the importance of RL in Ca2+ signaling during leaf growth. PB - Oxford Univ Press, Oxford T2 - Plant and Cell Physiology T1 - Spectral and dose dependence of light-induced ion flux responses from maize leaves and their involvement in leaf expansion growth EP - 605 IS - 4 SP - 598 VL - 48 DO - 10.1093/pcp/pcm032 ER -
@article{ author = "Živanović, Branka D. and Cuin, Tracey Ann and Shabala, Sergey", year = "2007", abstract = "Two types of segments (intact leaf tissue and isolated mesophyll tissue respectively) were isolated from basal (still growing) and tip (non-growing) maize leaf regions. The leaf segments were exposed to different light qualities (blue or red light) and quantities, and net fluxes of K+, Ca2+ and H+ were measured non-invasively using ion-selective vibrating microelectrodes (the MIFF technique). A clear dose dependency of all ion flux responses on both red (RL) and blue (BL) light fluence rate was found. We provide evidence that light-induced K+ flux kinetics are different between growing and non-growing tissues and attribute this difference to the direct involvement of RL-induced K+ flux in turgor-driven leaf expansion growth controlled by the epidermis, as well as to the charge-balancing role of K+ in the leaf mesophyll. Generally, BL was much more efficient in stimulating K+ uptake in the growing basal region compared with RL. We also show a much stronger influence of RL on Ca2+ fluxes in the basal region compared with BL, which argues in favor of the importance of RL in Ca2+ signaling during leaf growth.", publisher = "Oxford Univ Press, Oxford", journal = "Plant and Cell Physiology", title = "Spectral and dose dependence of light-induced ion flux responses from maize leaves and their involvement in leaf expansion growth", pages = "605-598", number = "4", volume = "48", doi = "10.1093/pcp/pcm032" }
Živanović, Branka D., Cuin, T. A.,& Shabala, S.. (2007). Spectral and dose dependence of light-induced ion flux responses from maize leaves and their involvement in leaf expansion growth. in Plant and Cell Physiology Oxford Univ Press, Oxford., 48(4), 598-605. https://doi.org/10.1093/pcp/pcm032
Živanović, Branka D., Cuin TA, Shabala S. Spectral and dose dependence of light-induced ion flux responses from maize leaves and their involvement in leaf expansion growth. in Plant and Cell Physiology. 2007;48(4):598-605. doi:10.1093/pcp/pcm032 .
Živanović, Branka D., Cuin, Tracey Ann, Shabala, Sergey, "Spectral and dose dependence of light-induced ion flux responses from maize leaves and their involvement in leaf expansion growth" in Plant and Cell Physiology, 48, no. 4 (2007):598-605, https://doi.org/10.1093/pcp/pcm032 . .