A Ni hyperaccumulator and a congeneric non-accumulator reveal equally effective defenses against herbivory
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چکیده
منابع مشابه
A Ni hyperaccumulator and a congeneric non-accumulator reveal equally effective defenses against herbivory.
The defense hypothesis is commonly used to explain the adaptive role of metal hyperaccumulation. We tested this hypothesis using two Brassicaceae congeneric species: Alyssum pintodasilvae, a Ni hyperaccumulator, and the non-accumulator Alyssum simplex both growing on serpentine soils in Portugal. Artificial diet disks amended with powdered leaves from each plant species were used to compare the...
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We compared root responses of the Ni-hyperaccumulator plant Berkheya coddii Rossler with the non-accumulator plant Cicer arietinum L. to Ni heterogeneity in soil. We grew plants in growth containers filled with control soil, homogeneously spiked, and heterogeneously spiked soil with Ni concentrations of 62 and 125 mg kg(-1). Neutron radiography (NR) was used to observe the root distribution and...
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A s sessile, photosynthetic organisms, plants benefit greatly from a circadian clock that adjusts their overall metabolism in anticipation of the highly predictable arrival of sunrise and sunset. Thus, it is not surprising that about one-third of all plant genes show evidence of circadian regulation in their expression patterns (1, 2). However, closer examination of this diurnally regulated tra...
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Extrafloral nectaries play an important role in plant defense against herbivores by providing nectar rewards that attract ants and other carnivorous insects. However, extrafloral nectaries can themselves be targets of herbivory, in addition to being exploited by nectar-robbing insects that do not provide defensive services. We recently found that the extrafloral nectaries of Vicia faba plants, ...
متن کاملSubcellular localization and speciation of nickel in hyperaccumulator and non-accumulator Thlaspi species.
The ability of Thlaspi goesingense Hálácsy to hyperaccumulate Ni appears to be governed by its extraordinary degree of Ni tolerance. However, the physiological basis of this tolerance mechanism is unknown. We have investigated the role of vacuolar compartmentalization and chelation in this Ni tolerance. A direct comparison of Ni contents of vacuoles from leaves of T. goesingense and from the no...
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ژورنال
عنوان ژورنال: Science of The Total Environment
سال: 2014
ISSN: 0048-9697
DOI: 10.1016/j.scitotenv.2013.06.113