Preferential Geographic Distribution Pattern of Abiotic Stress Tolerant Rice

Abstract

Crop productivity and stability of the food system are threatened by climate change, mainly through the effects of predicted abiotic stresses. Despite extensive research on abiotic stress tolerance in the past decades, the successful translation of these research to fields/farmers is scarce. The impelling demand of climate resilient varieties, and the poor translation of research into the field despite the availability of high throughput technologies lead us to critically analyse a neglected aspect of current abiotic stress tolerance research. Although environmental factors play the most important role in the development of adaptive traits of plants, most abiotic stress tolerance research ignores eco-geographic aspects of highly stress tolerant accessions. In this review, we critically examined the geographic distribution pattern of highly tolerant rice accessions of all major abiotic stresses along with one micronutrient deficiency. Remarkably, we identified a shared geographic distribution pattern of highly tolerant accessions for all abiotic stresses including zinc deficiency despite the sparseness of highly tolerant accessions. The majority of these tolerant accessions predominately originated from Bangladesh centred narrow geographic region. We therefore analysed the climatic and agro-ecological features of Bangladesh. Considering the threat of climate change on global food security and poverty, urgent concerted research efforts are necessary for the development of climate resilient rice varieties utilizing the technological advancement, know-hows, and the preferential distribution pattern of abiotic stress tolerant rice.Electronic supplementary materialThe online version of this article (10.1186/s12284-018-0202-9) contains supplementary material, which is available to authorized users.

Nanopore sequencing-based genome assembly and evolutionary genomics of circum-basmati rice

“…The rich genetic diversity of Asian rice is likely a result from a complex domestication process involving multiple wild progenitor populations and the exchange of important domestication alleles between O. sativa variety groups through gene flow [5,7,[9][10][11][12][13][14][15][16][17]. Moreover, many agricultural traits within rice are variety group-specific [18][19][20][21][22][23], suggesting local adaptation to environments or cultural preferences have partially driven the diversification of rice varieties.…”

Genetic markers associated with seed longevity and vitamin E in diverse Aus rice varieties

“…Aus varieties are considered more closely related to wild rice species (Londo et al, 2006) with unfavourable characteristics such as excessively tall plant height, small grain size and high shattering (Lee et al, 2018). However, they are a potentially important source of genes conferring tolerance to abiotic stresses such as drought and zinc deficiency (Bin Rahman and Zhang, 2018; Lee et al, 2018). The Aus group is less well described than the Indica and Japonica variety groups, and there is little information about the relative longevity of seeds from Aus varieties.…”

The Coexistence of Flood and Drought Tolerance: An Opinion on the Development of Climate-Smart Rice

“…Using detailed sequencing analyses, Kuroha et al ( 2018 ) revealed that deepwater rice–specific variant of SEMIDWARF1 ( SD1-DW ) is predominantly available in deepwater rice varieties of Bangladesh whereas deepwater rice in other countries only harbor SK1 / 2 . Moreover, we have earlier showed that abiotic stress tolerance accessions are predominately originated from Bangladesh (Bin Rahman and Zhang, 2018 ). Similarly, we know numerous other Bhadoia accessions beside Bhadoia 303, such as Bhadoia 648 (IRGC 6502), Bhadoia 688 (IRGC 6492), Bhadoia 689 (IRGC 6536), etc.…”