Agriculture Reference
In-Depth Information
their tolerance to chilling (0-15°C) and freezing (<0°C) temperatures. Both chilling and freezing
tissues, whereas freezing stress results in ice formation within plant tissues. Plants differ in
results from temperatures cool enough to produce injury without forming ice crystals in plant
plant growth and crop productivity and leads to substantial crop losses [8, 9]. Chilling stress
Low temperature (LT) or cold stress is another major environmental factor that often affects
or other stresses [7].
wide, extensive agricultural losses are attributed to heat, often in combination with drought
HT vary with the extent of the temperature increase, its duration, and the plant type. World‐
all of which are sensitive to some degree to temperature [6]. Consequently, plant responses to
The growth and development of plants involves a countless number of biochemical reactions,
period of time sufficient to cause irreversible damage to plant growth and development [5].
High temperature stress is defined as the rise in temperature beyond a critical threshold for a
decade from 2000 to 2009 was the warmest ever recorded.
global temperatures have risen during the last 30 years [4], and it was mentioned that the
restricting crop production [3]. The US Environmental Protection Agency (EPA) indicates that
growth and productivity; HT is now considered to be one of the major abiotic stresses for
plant species. Global climate change is making high temperature (HT) a critical factor for plant
plant growth and metabolism, as these processes have optimum temperature limits in every
projecting potential agricultural impacts [1, 2]. Temperature stress has devastating effects on
changing climate. The difficulty of climate change is further added considering its precisely
Temperature stress is becoming the major concern for plant scientists worldwide due to the
1. Introduction
http://dx.doi.org/10.5772/54833
Additional information is available at the end of the chapter
Masayuki Fujita
Mirza Hasanuzzaman, Kamrun Nahar and
Antioxidant Defense in Plants
Extreme Temperature Responses, Oxidative Stress and
Chapter 6
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