scholarly journals Effects of Different Levels of Supplementary Alpha-amylase on Digestive Enzyme Activities and Pancreatic Amylase mRNA Expression of Young Broilers

2008 ◽  
Vol 21 (1) ◽  
pp. 97-102 ◽  
Author(s):  
Zhengyu Jiang ◽  
Yanmin Zhou ◽  
Fuzeng Lu ◽  
Zhaoyu Han ◽  
Tian Wang
Keyword(s):  
Mrna Expression ◽  
Enzyme Activities ◽  
Digestive Enzyme ◽  
Alpha Amylase ◽  
Pancreatic Amylase ◽  
Digestive Enzyme Activities ◽  
Different Levels

scholarly journals Jasmonate-independent regulation of digestive enzyme activity in the carnivorous butterwort Pinguicula × Tina

2020 ◽  
Vol 71 (12) ◽  
pp. 3749-3758 ◽  
Author(s):  
Ondřej Kocáb ◽  
Jana Jakšová ◽  
Ondřej Novák ◽  
Ivan Petřík ◽  
René Lenobel ◽  
...  
Keyword(s):  
Jasmonic Acid ◽  
Enzyme Activities ◽  
Digestive Enzymes ◽  
Defense Mechanisms ◽  
Prey Capture ◽  
Digestive Enzyme ◽  
Carnivorous Plants ◽  
Alpha Amylase ◽  
Jasmonate Signaling ◽  
Digestive Enzyme Activities

Abstract Carnivorous plants within the order Caryophyllales use jasmonates, a class of phytohormone, in the regulation of digestive enzyme activities. We used the carnivorous butterwort Pinguicula × Tina from the order Lamiales to investigate whether jasmonate signaling is a universal and ubiquitous signaling pathway that exists outside the order Caryophyllales. We measured the electrical signals, enzyme activities, and phytohormone tissue levels in response to prey capture. Mass spectrometry was used to identify proteins in the digestive secretion. We identified eight enzymes in the digestive secretion, many of which were previously found in other genera of carnivorous plants. Among them, alpha-amylase is unique in carnivorous plants. Enzymatic activities increased in response to prey capture; however, the tissue content of jasmonic acid and its isoleucine conjugate remained rather low in contrast to the jasmonate response to wounding. Enzyme activities did not increase in response to the exogenous application of jasmonic acid or coronatine. Whereas similar digestive enzymes were co-opted from plant defense mechanisms among carnivorous plants, the mode of their regulation differs. The butterwort has not co-opted jasmonate signaling for the induction of enzyme activities in response to prey capture. Moreover, the presence of alpha-amylase in digestive fluid of P. × Tina, which has not been found in other genera of carnivorous plants, might indicate that non-defense-related genes have also been co-opted for carnivory.

Changes in digestive enzyme activities during the early ontogeny of the South American cichlid (Cichlasoma dimerus)

2021 ◽  
Author(s):  
Francisco Javier Toledo-Solís ◽  
Andrea Guadalupe Hilerio-Ruiz ◽  
Tomás Delgadin ◽  
Daniela Pérez Sirkin ◽  
María Paula Di Yorio ◽  
...  
Keyword(s):  
Enzyme Activities ◽  
Digestive Enzyme ◽  
Early Ontogeny ◽  
South American ◽  
The South ◽  
Digestive Enzyme Activities
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