The quantitative determination of photosystem I density on intact leaves using single turnover flashes
Başlık çevirisi mevcut değil.
- Tez No: 364454
- Danışmanlar: PROF. DR. ÖMER SAYGIN
- Tez Türü: Yüksek Lisans
- Konular: Biyoloji, Biology
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 1992
- Dil: İngilizce
- Üniversite: Boğaziçi Üniversitesi
- Enstitü: Çevre Bilimleri Enstitüsü
- Ana Bilim Dalı: Çevre Bilimleri Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 73
Özet
Özet yok.
Özet (Çeviri)
The in vivo measurement of photosynthesis has been largely limited to fluorescence. which is hard to interpret being a very indirect measurement and to gas exchange in continuous light. which infers only about the overall efficiency of the leaf and does not give any quantitative data about the concentrations and absolute activities of photostynthetic complexes. In this study. a method. proposed for in vivo determination of the concentration and redox state of Photosystem I. one of the photoactive complexes of photosynthesis. has been corrected. Most of the complexes in the photosynthetic unit can be measured with exactly the same principles and similar equipment. This would make possible a diagnostic test system for nondestructive testing of photosynthetic stress The necessity of P700 measurement for such a system and the opportunities it promises have been briefly discussed. It has been concluded that the magnitude and exact site of damage on photosynthesis by environmental factors can be determined with te help of PS I measurement. For the quantitative justification of the measurements. the influence of the nonideal optical properties of the leaf on the measurements have been investigated by experimental means and it has been observed that the refraction and scattering phenomena in the leaf magnify the apparent absorption changes by a factor of ca. six. A method for the exact determination of active PS I centers, through measurement of the oxygen evolved by single turnover flash excitation has been developed. The elongation of the pathlenght of the light in the leaf up to about six times the thickness of the leaf has been found to be due to mostly the refractions in the lipid air interface at the spongy parenchima. This organisation of the leaf structure appears to be an intentional event, with the purpose of increasing the light harvesting efficiency of the leaf at the spectral region between the peaks of chlorophyll absorption.
Benzer Tezler
- Bio-industrial active agents from sea cucumbers along Turkish coastlines
Türk kıyılarındaki deniz hıyarlarından biyo-endüstriyel aktif ajanlar
NAZLI MERT
Yüksek Lisans
İngilizce
2014
BiyoteknolojiDokuz Eylül ÜniversitesiBiyoteknoloji Ana Bilim Dalı
PROF. DR. LEVENT ÇAVAŞ
- Kolorimetrik yöntem ile 5-hidroksimetilfurfural'ın kantitatif tayini ve kağıt tabanlı tek kullanımlık belirteç üretimi
Colorimetric quantitative determination of 5- hydroxymethylfurfural and development of a disposable indicator based on paper
AYŞEGÜL BEŞİR
Doktora
Türkçe
2022
Gıda MühendisliğiOndokuz Mayıs ÜniversitesiGıda Mühendisliği Ana Bilim Dalı
PROF. DR. FEHMİ YAZICI
- Toplam protein tayininde nanopartikül tabanlı yeni analiz sistemlerinin geliştirilmesi
Development of new analysis systems for total protein assays based on nanoparticles
MERVE ERYILMAZ
- Normotermik intraperitonal uygulanan nanodoksorubisinin biyolojik sıvılarda analizi
Analysis of normothermic intraperitoneally applied nanodoxorubicin in biological fluids
NEŞET NEŞETOĞLU
Doktora
Türkçe
2022
Eczacılık ve Farmakolojiİstanbul ÜniversitesiAnalitik Kimya Ana Bilim Dalı
PROF. DR. SERAP SAĞLIK ASLAN
- Deflazacort'un sürekli akış enjeksiyon analizi ile miktar tayini, validasyonu ve tabletlerine uygulanması
The quantitative determination of deflazacort by flow-injection analysis, its validation and application on the tablets
DERYA YAPAR
Yüksek Lisans
Türkçe
2003
Eczacılık ve FarmakolojiAnadolu ÜniversitesiAnalitik Kimya Ana Bilim Dalı
PROF.DR. MUZAFFER TUNÇEL