Intervention of molecular breeding in water saving rice production system: aerobic rice

Meena, Rahul Kumar; Bhusal, Nabin; Kumar, Kuldeep; Jain, R. K.; Jain, Sunita

doi:10.1007/s13205-019-1657-0

Cited by 11 publications

(6 citation statements)

References 75 publications

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“…Aerobic rice cultivation aims to maximise crop water use efficiency by growing plants in soil without flooding or puddling (Matsunami et al, 2009; Matsuo et al, 2009)⁠. It allows greater water savings and can be deployed in regions without access to irrigation water but has a high yield penalty and is associated with increased weed management and risks of nematodes (Meena et al, 2019)⁠⁠.…”

Section: Case Study 3: Water‐saving Rice Agroecosystems For West Africamentioning

confidence: 99%

Root traits for low input agroecosystems in Africa: Lessons from three case studies

Ndoye

Burridge

Bhosale

et al. 2022

Plant Cell & Environment

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In many regions across Africa, agriculture is largely based on low‐input and small‐holder farming systems that use little inorganic fertilisers and have limited access to irrigation and mechanisation. Improving agricultural practices and developing new cultivars adapted to these environments, where production already suffers from climate change, is a major priority for food security. Here, we illustrate how breeding for specific root traits could improve crop resilience in Africa using three case studies covering very contrasting low‐input agroecosystems. We first review how greater basal root whorl number and longer and denser root hairs increased P acquisition efficiency and yield in common bean in South East Africa. We then discuss how water‐saving strategies, root hair density and deep root growth could be targeted to improve sorghum and pearl millet yield in West Africa. Finally, we evaluate how breeding for denser root systems in the topsoil and interactions with arbuscular mycorrhizal fungi could be mobilised to optimise water‐saving alternate wetting and drying practices in West African rice agroecosystems. We conclude with a discussion on how to evaluate the utility of root traits and how to make root trait selection feasible for breeders so that improved varieties can be made available to farmers through participatory approaches.

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Section: Case Study 3: Water‐saving Rice Agroecosystems For West Africamentioning

confidence: 99%

Root traits for low input agroecosystems in Africa: Lessons from three case studies

Ndoye

Burridge

Bhosale

et al. 2022

Plant Cell & Environment

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“…In Asia, approximately 50% of irrigation water is consumed by rice cultivation, which accounts for 24–30% of the withdrawal of the world’s total freshwater [ 1 , 2 ]. In addition, aerobic rice is a method of rice where seeds are sowed directly in well-tilled and leveled fields [ 3 ]. Aerobic rice is developed to tackle the water shortage as a sustainable method to enhance rice production [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, aerobic rice is a method of rice where seeds are sowed directly in well-tilled and leveled fields [ 3 ]. Aerobic rice is developed to tackle the water shortage as a sustainable method to enhance rice production [ 3 ]. However, aerobic rice cultivation not only faces overground insects damage, such as yellow stem borer ( Scirpophaga incertulas ), rice leaf folder ( Cnophalocrosis medinalis ), brown planthopper ( Nilaparvata lugens ), white-backed planthopper ( Sogatella turcifera ), and green paddy leafhopper ( Nephotetticx virescens ), but also increases the risk of damage caused by root-feeding insects, such as white grubs [ 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

The effect of white grub (Maladera Verticalis) larvae feeding on rhizosphere microbial characterization of aerobic rice (Oryza sativa L.) in Puer City, Yunnan Province, China

Wang,

Li,

Yang

et al. 2024

BMC Microbiol

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Background Rhizosphere microorganisms are vital in plants’ growth and development and these beneficial microbes are recruited to the root-zone soil when experiencing various environmental stresses. However, the effect of white grub (Maladera verticalis) larvae feeding on the structure and function of rhizosphere microbial communities of aerobic rice (Oryza sativa L.) is unclear. Results In this study, we compared physicochemical properties, enzyme activities, and microbial communities using 18 samples under healthy and M. verticalis larvae-feeding aerobic rice rhizosphere soils at the Yunnan of China. 16 S rRNA and ITS amplicons were sequenced using Illumina high throughput sequencing. M. verticalis larvae feeding on aerobic rice can influence rhizosphere soil physicochemical properties and enzyme activities, which also change rhizosphere microbial communities. The healthy and M. verticalis larvae-feeding aerobic rice rhizosphere soil microorganisms had distinct genus signatures, such as possible_genus_04 and Knoellia genera in healthy aerobic rice rhizosphere soils and norank_f__SC − I−84 and norank_f__Roseiflexaceae genera in M. verticalis larvae-feeding aerobic rice rhizosphere soils. The pathway of the metabolism of terpenoids and polyketides and carbohydrate metabolism in rhizosphere bacteria were significantly decreased after M. verticalis larvae feeding. Fungal parasite–wood saprotroph and fungal parasites were significantly decreased after M. verticalis larvae feeding, and plant pathogen–wood saprotroph and animal pathogen–undefined saprotroph were increased after larvae feeding. Additionally, the relative abundance of Bradyrhizobium and Talaromyces genera gradually increased with the elevation of the larvae density. Bacterial and fungal communities significantly correlated with soil physicochemical properties and enzyme activities, respectively. Conclusions Based on the results we provide new insight for understanding the adaptation of aerobic rice to M. verticalis larvae feeding via regulating the rhizosphere environment, which would allow us to facilitate translation to more effective measures.

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“…There exists a correlation between nutrient uptake and root traits, yield, and yield-related traits in rice. Reports have mentioned that there exists a relationship and positive correlation between root growth parameters viz., root length, root number, root volume, root dry weight and shoot dry weight and yield of aerobic rice ( Sandhu et al., 2013 ; Sunil and Shankaralingappa, 2014 ; Meena et al., 2019 ). Thus, the selection of rice lines having robust root systems, early seedling vigor and high yield potential under irrigated and direct seeded aerobic conditions is essential towards the climate-resilience breeding programmes.…”

Section: Introductionmentioning

confidence: 99%

Genome-wide association studies in rice germplasm reveal significant genomic regions for root and yield-related traits under aerobic and irrigated conditions

et al. 2023

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The development of nutrient-use efficient rice lines is a priority amidst the changing climate and depleting resources viz., water, land, and labor for achieving sustainability in rice cultivation. Along with the traditional transplanted irrigated system of cultivation, the dry direct-seeded aerobic system is gaining ground nationwide. The root-related traits play a crucial role in nutrient acquisition, adaptation and need to be concentrated along with the yield-attributing traits. We phenotyped an association panel of 118 rice lines for seedling vigour index (SVI) traits at 14 and 21 days after sowing (DAS), root-related traits at panicle initiation (PI) stage in polythene bags under controlled aerobic condition, yield and yield-related traits under the irrigated condition at ICAR-IIRR, Hyderabad, Telangana; irrigated and aerobic conditions at ARS, Dhadesugur, Raichur, Karnataka. The panel was genotyped using simple sequence repeats (SSR) markers and genome-wide association studies were conducted for identifying marker–trait associations (MTAs). Significant correlations were recorded for root length, root dry weight with SVI, root volume at the PI stage, number of productive tillers per plant, spikelet fertility, the total number of grains per panicle with grain yield per plant under irrigated conditions, and the total number of grains per panicle with grain yield per plant under aerobic condition. The panel was divided into three sub-groups (K = 3) and correlated with the principal component analysis. The maximum number of MTAs were found on chromosomes 2, 3, and 12 with considerable phenotypic variability. Consistent MTAs were recorded for SVI traits at 14 and 21 DAS (RM25310, RM80, RM22961, RM1385), yield traits under irrigated conditions (RM2584, RM5179, RM410, RM20698, RM14753) across years at ICAR-IIRR, grain yield per plant (RM22961, RM1146) under the aerobic condition, grain yield per plant at irrigated ICAR-IIRR and SVI (RM5501), root traits at PI stage (RM2584, RM80, RM410, RM1146, RM18472). Functionally relevant genes near the MTAs through in-silico expression analysis in root and panicle tissues viz., HBF2 bZIP transcription factor, WD40 repeat-like domain, OsPILS6a auxin efflux carrier, WRKY108, OsSCP42, OsMADS80, nodulin-like domain-containing protein, amino acid transporter using various rice expression databases were identified. The identified MTAs and rice lines having high SVI traits (Langphou, TI-128, Mouli, TI-124, JBB-631-1), high yield under aerobic (Phouren, NPK-43, JBB-684, Ratnamudi, TI-112), irrigated conditions (KR-209, KR-262, Phouren, Keibi-Phou, TI-17), robust root traits like root length (MoirangPhou-Angouba, Wangoo-Phou, JBB-661, Dissi, NPK-45), root volume (Ratnachudi, KJ-221, Mow, Heimang-Phou, PUP-229) can be further employed in breeding programs for the targeted environments aimed at improving seedling vigour, yield-related traits under irrigated condition, aerobic condition as adaptability to water-saving technology.

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Intervention of molecular breeding in water saving rice production system: aerobic rice

Cited by 11 publications

References 75 publications

Root traits for low input agroecosystems in Africa: Lessons from three case studies

Root traits for low input agroecosystems in Africa: Lessons from three case studies

The effect of white grub (Maladera Verticalis) larvae feeding on rhizosphere microbial characterization of aerobic rice (Oryza sativa L.) in Puer City, Yunnan Province, China

Genome-wide association studies in rice germplasm reveal significant genomic regions for root and yield-related traits under aerobic and irrigated conditions

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