|Table of Contents|

Physiological Response of Celery (Apium graveolens L.) to Cadmium Stress by FTIR Spectroscopy(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年15
Page:
11-16
Research Field:
Publishing date:

Info

Title:
Physiological Response of Celery (Apium graveolens L.) to Cadmium Stress by FTIR Spectroscopy
Author(s):
HU Bohua1; XU Jie1; DUAN Dechao2; CHEN Qin1; GE Tao1
(1.College of Biological，Chemical Sciences and Engineering，Jiaxing University，Jiaxing，Zhejiang 314001；2.Bestwa Environmental Protection Sci-Tech Co.Ltd.，Hangzhou，Zhejiang 310015)
Keywords:
cadmium stress; fourier transform infrared spectrum; chemical composition; celery
PACS:
-
DOI:
10.11937/bfyy.201515003
Abstract:
Cd is a highly toxic and highly water soluble element without biological function，which tends to enter the food chain，adversely affecting human health once released into the environment.Celery (Apium graveolens L.) is widely planted as a popular vegetable in our country，and has certain accumulation ability for Cd.In the present study，fourier transform infrared (FTIR) spectrometry was used to investigate the physiological changes in chemical composition of celery exposed to solution containing different Cd2+ concentration (0，5，10，20，40 mg/L).The results showed that after an initial decline，the A/A2 931value of the dominant infrared bands near 3 410 cm-1，1 636 cm-1，1 389 cm-1and 1 065 cm-1 in both roots and stems increased at first and then decreased.This indicated that there was almost no effect on physiological processes of the roots and the stems with low Cd2+ concentration，while at medium Cd2+ concentration the roots and the stems were promoted to coalesce，secret and transport organics (carbohydrates，amino acids，proteins，carbohydrates)，and with high Cd2+ concentration the secretion and transportation of the organics were inhibited.Meanwhile，the methylated pectin in cell wall of the roots and the stems increased，and the peroxide products of ketones in cells of the roots and the stems decreased.The A/A2 931value of the dominant infrared bands in the leaves showed a gradually rising trend，which indicated that the stress resistance of the leaves to Cd2+ increased with the Cd2+ concentration increased.As a result，FTIR technique could be accepted as a way to study the physiological mechanism of plant for adapting to the stress of heavy metals.

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Last Update: 2015-08-18