Assessing and modeling nitrite inhibition in microalgae-bacteria consortia for wastewater treatment by means of photo-respirometric and chlorophyll fluorescence techniques

2021 ◽  
pp. 152128
Author(s):  
Stéphanie Aparicio ◽  
Ángel Robles ◽  
José Ferrer ◽  
Aurora Seco ◽  
Luis Borrás
Keyword(s):  
Wastewater Treatment ◽  
Chlorophyll Fluorescence ◽  
Fluorescence Techniques ◽  
Nitrite Inhibition

scholarly journals Misurare la vitalità delle piante per mezzo della fluorescenza della clorofilla

2012 ◽  
Author(s):  
Filippo Bussotti ◽  
Mohamed Hazem Kalaji ◽  
Rosanna Desotgiu ◽  
Martina Pollastrini ◽  
Tadeusz Loboda ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Fluorescence Imaging ◽  
Low Temperatures ◽  
Photosynthetic Apparatus ◽  
Delayed Fluorescence ◽  
Chlorophyll Fluorescence Imaging ◽  
Strong Light ◽  
Fluorescence Techniques ◽  
Modulated Fluorescence ◽  
High And Low Temperatures

The book begins with a detailed description of the characteristics of the photosynthetic apparatus and the processes that take place there, to then present the general principles of fluorescence. After that, it gives a description of the characteristics of direct and modulated fluorescence and a presentation of the shared and distinctive parameters of these two techniques. Then a brief presentation is made of other innovative approaches to the analysis of fluorescence (Chlorophyll Fluorescence Imaging - CFI, P700 absorbance, delayed fluorescence) and the relative tools. An important part of the book comprises a description of the possible applications of fluorescence techniques for the analysis of various types of stress (aridity, strong light radiations, UV, high and low temperatures, salinity, weedkillers, pollution, etc.) and, consequently, their possible use in agriculture, forestry and to protect the environment.

Ozone sensitivity in herbaceous species as assessed by direct and modulated chlorophyll fluorescence techniques

2001 ◽  
Vol 158 (6) ◽  
pp. 757-766 ◽  
Author(s):  
Stefan Nussbaum ◽  
Markus Geissmann ◽  
Peter Eggenberg ◽  
Reto J. Strasser ◽  
Jürg Fuhrer
Keyword(s):  
Chlorophyll Fluorescence ◽  
Herbaceous Species ◽  
Fluorescence Techniques ◽  
Ozone Sensitivity ◽  
Modulated Chlorophyll Fluorescence

Chilling Injury Determination in Tomato Fruit using Electrolyte Leakage and Chlorophyll Fluorescence Techniques

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 489e-490
Author(s):  
M.A. Moura ◽  
G.A. Mendonça ◽  
F.L. Finger
Keyword(s):  
Chlorophyll Fluorescence ◽  
Electrolyte Leakage ◽  
Statistical Difference ◽  
Tomato Fruit ◽  
Chilling Injury ◽  
The Other ◽  
Fluorescence Techniques ◽  
Other Hand ◽  
Green Stage

The present work was carried out to evaluate chilling injury in tomato fruit, cv. Santa Clara and EF-50, employing chlorophyll fluorescence and electrolyte leakage techniques. Fruit were harvested at the mature-green stage and stored at 5 and 10 °C for 14 days. Chlorophyll fluorescence was analyzed every 2 days, whereas electrolyte leakage was measured every 7 days. It was observed that cv. Santa Clara stored at 10 °C had no statistical alteration in Fv/Fm ratio and did not show a significant increase in electrolyte leakage. These results indicate that tomato fruit, cv. Santa Clara, were not injured during the analyzed period. On the other hand, fruit stored at 5 °C showed a significant decrease in Fv/Fm ratio after 6 days whereas electrolyte leakage was significantly higher at the 14th day of storage. For cv. EF-50, it was observed that fruit stored at 10 °C had a significant decrease in the Fv/Fm ratio after 10 days, although there was no statistical difference for electrolyte leakage. For fruit stored at 5 °C, it was verified that Fv/Fm ratio significantly decreased after 2 days and electrolyte leakage was significantly higher after 7 days of storage. Based on the results presented, it is suggested that tomato fruit, cv. Santa Clara, is potentially more resistant to chilling injury than cv. EF-50 and chlorophyll fluorescence proved to be a useful tool to study physiological stresses such as chilling injury.

scholarly journals Foliar Heat Tolerance of Two Hybrid Hollies

HortScience ◽  
1993 ◽  
Vol 28 (6) ◽  
pp. 650-652 ◽  
Author(s):  
John M. Ruter
Keyword(s):  
Chlorophyll Fluorescence ◽  
Plant Growth ◽  
Heat Tolerance ◽  
Growth Temperature ◽  
Electrolyte Leakage ◽  
Variable Fluorescence ◽  
Fluorescence Techniques ◽  
Fluorescence Measurements ◽  
Two Hybrid ◽  
Physiologic Data

Temperatures producing heat damage in leaves of Ilex ×meserveae S.Y. Hu `Blue Prince' and Ilex rugosa × cornuta Lindl. & Paxt. `Mesdob' (China Boy) were evaluated using electrolyte leakage and chlorophyll fluorescence techniques. Whole leaves were exposed to temperatures from 30 to 65C for 30 minutes to determine critical midpoint heat-killing temperatures (TJ using electrolyte leakage techniques. The Tm for `Blue Prince' and `Mesdob' was 52.4 ± 0.lC and 53.8 ± 0.lC, respectively. Dark-adapted leaves were heated for 30 minutes in darkness at temperatures between 30 and 57C before chlorophyll fluorescence was measured. Initial (F0) and peak fluorescence measurements were higher at 54 and 55C for `Mesdob' than for `Blue Prince'. Cultivar had no effect on variable fluorescence (F,). Based on the Fv: Fo ratio, `Mesdob' was estimated to have a higher optimal plant growth temperature than `Blue Prince'. The physiologic data support the hypothesis that I. cornuta as a parent conferred heat tolerance to the interspecific hybrid in this study.

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