By Sanjib Kumar Panda, František Baluška
This publication is an outline of our present knowing of aluminium toxicity and tolerance in vegetation. It covers all appropriate facets from molecular and mobile biology, to genetic ways, root biology and plant body structure. The contribution of arbuscular mycorrhizal fungi to assuaging aluminium toxicity is usually mentioned. Over forty% of overall agricultural land assets are acidic in nature, with aluminium being the main toxicant. Plant roots are quite prone to aluminium pressure, yet a lot of the advanced mechanism underlying its toxicity and tolerance is unknown and aluminium rigidity conception in vegetation continues to be poorly understood. the various elements of aluminium tension version coated during this publication are proper to plant biology scholars in any respect degrees, in addition researchers and it offers a worthy contribution to our realizing of plant edition to the altering environment.
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Extra resources for Aluminum Stress Adaptation in Plants
Interestingly, TaSTOP1 in wheat is involved in Al tolerance, but not through regulating TaALMT1 (Garcia-Oliveira et al. 2013), since TaALMT1 expression is not induced by Al. Recently, WRKY46, a member of the WRKY domain-containing family of transcription factors, was identified as a negative regulator of expression of AtALMT1, a key Al-tolerance gene in Arabidopsis (Ding et al. 2013). It could be bound to the AtALMT1 promoter region as a repressor (Fig. 1; Ding et al. 2013), because there are several putative W-box domains in the AtALMT1 promoter region.
This genetic mechanism leads to multiple genomes per cell and is typically found in cells with terminal growth and development, such as the shoot epidermis or seed endosperm (Larkins et al. 2001; Lee et al. 2009). Endo-reduplication thus confers the genetic equivalent of polyploidy to certain cells and tissues, potentially in response to various physiological stresses (Lee et al. 2009), and might help explain the dramatic transcriptional responses to safener treatment observed with initial RNAseq analyses in dissected sorghum coleoptiles (Riechers, Lygin, Brown, and Moose, unpublished).
Proc Natl Acad Sci U S A 107:18381–18385 Xu FX, Lagudah ES, Moose SP, Riechers DE (2002) Tandemly-duplicated safener-induced glutathione S-transferase genes from Triticum tauschii contribute to genome- and organspecific expression in hexaploid wheat. Plant Physiol 130:362–373 Yamaguchi Y, Yamamoto Y, Matsumoto H (1999) Cell death process initiates by a combination of aluminum and iron in suspension-cultured tobacco cells (Nicotiana tobacum): apoptosis-like cell death mediated by calcium and proteinase.
Aluminum Stress Adaptation in Plants by Sanjib Kumar Panda, František Baluška
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