Sunflower: Improving Crop Productivity and Abiotic Stress Tolerance

Sala, Carlos A.; Bulos, Mariano; Altieri, Emiliano; Ramos, María Laura

doi:10.1002/9783527632930.ch47

Cited by 14 publications

(8 citation statements)

References 237 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Adaption to new environments involves adaption to abiotic or biotic challenges (Cronin et al ., ) that can be revealed by whole‐genome analysis. Use of CWR has been suggested as a means to increase tolerance to biotic and abiotic stress and thereby improve productivity in a range of crops such as the major cereal grains, wheat (Singh et al ., ), rice (Gothandam, ), maize (Singh et al ., ), vegetables (Kunchge et al ., ; Pineda et al ., ; Wang‐Pruski and Schofield, ), grain legumes (Reddy et al ., ), sugar cane (Shrivastava and Srivastava, ), fruits (Nath et al ., ) and oil crops (Gill et al ., ; Lakhanpaul et al ., ; Palmer et al ., ; Robinson and Parkin, ; Sala et al ., ). CWRs have been used to increase tolerance to abiotic stress, such as water submergence, drought and salt, which was reviewed recently review (Mickelbart et al ., ).…”

Section: Applications Of Cwrsmentioning

confidence: 97%

Genomics of crop wild relatives: expanding the gene pool for crop improvement

Brożyńska

Furtado

Henry

2015

Plant Biotechnology Journal

340

216

View full text Add to dashboard Cite

Summary Plant breeders require access to new genetic diversity to satisfy the demands of a growing human population for more food that can be produced in a variable or changing climate and to deliver the high‐quality food with nutritional and health benefits demanded by consumers. The close relatives of domesticated plants, crop wild relatives (CWRs), represent a practical gene pool for use by plant breeders. Genomics of CWR generates data that support the use of CWR to expand the genetic diversity of crop plants. Advances in DNA sequencing technology are enabling the efficient sequencing of CWR and their increased use in crop improvement. As the sequencing of genomes of major crop species is completed, attention has shifted to analysis of the wider gene pool of major crops including CWR. A combination of de novo sequencing and resequencing is required to efficiently explore useful genetic variation in CWR. Analysis of the nuclear genome, transcriptome and maternal (chloroplast and mitochondrial) genome of CWR is facilitating their use in crop improvement. Genome analysis results in discovery of useful alleles in CWR and identification of regions of the genome in which diversity has been lost in domestication bottlenecks. Targeting of high priority CWR for sequencing will maximize the contribution of genome sequencing of CWR. Coordination of global efforts to apply genomics has the potential to accelerate access to and conservation of the biodiversity essential to the sustainability of agriculture and food production.

show abstract

Section: Applications Of Cwrsmentioning

confidence: 97%

Genomics of crop wild relatives: expanding the gene pool for crop improvement

Brożyńska

Furtado

Henry

2015

Plant Biotechnology Journal

340

216

View full text Add to dashboard Cite

show abstract

“…Al‐Khatib, Baumgartner, Peterson, and Currie (1998) obtained a wild sunflower population resistant to IMI (PUR H. annuus ). These researchers introgressed the herbicide resistance trait into sunflower elite inbred lines by conventional breeding methods, developing IMI‐resistant cultivars known as Imisun sunflowers (Miller & Al‐Khatib, 2002; Sala, Bulos, Altieri, & Ramos, 2012). The incorporation of the IMI resistance trait in sunflower represented a major step in weed control and productivity improvement in this crop.…”

Section: Introductionmentioning

confidence: 99%

Stress response and detoxification mechanisms involved in non‐target‐site herbicide resistance in sunflower

et al. 2020

View full text Add to dashboard Cite

The nature of non‐target‐site herbicide resistance (NTSR) to imidazolinone (IMI) in HA425 sunflower (Helianthus annuus L.) has not yet been fully characterized but could be related to xenobiotic metabolism. The objective of this study was to evaluate the role of cytochrome P450 monooxygenases (P450s) and other detoxification‐related proteins in NTSR in sunflower. Two sunflower inbred lines were used: HA 425, which is IMI resistant (Imisun), and HA 89, which is IMI susceptible. The growth response to the IMI herbicide imazethapyr in combination with the P450 inhibitors 1‐aminobenzotriazole (ABT) or piperonyl butoxide (PBO) was evaluated in 15‐d‐old sunflower plantlets. Roots were collected, and label‐free quantitation (LFQ) proteomic analysis was carried out to characterize the NTSR mechanisms involved in the IMI resistance trait in sunflower. The increased phytotoxicity of imazethapyr observed in the resistant line when ABT or PBO were present agrees with the hypothesis that NTSR mechanisms may contribute to herbicide resistance in sunflower. The herbicide treatment also led to changes in the levels of biotic and abiotic stress‐related proteins, glutathione S‐transferases, and cytochrome P450s, among others. Plant growth and root protein expression response to IMI herbicides in sunflower would be a combination of stress‐related and detoxification mechanisms. Understanding the basis of NTSR becomes helpful to exploit this trait in sunflower crop and to develop xenobiotic‐resistant, soil‐remediating cultivars.

show abstract

“…In the last years, many efforts have been made to develop sunflower cultivars showing important agronomical characteristics such as drought and salinity stress tolerance (Blum, 1987;Liu and Baird, 2003;Roche and Hewezi, 2009;Sala et al, 2012a) and herbicide resistance (Sala et al, 2012b). The latter has been one of the most critical areas of research, aiming to obtain improved sunflower germplasms with resistance to herbicides in order to control weeds and reduce economic losses all over the world.…”

Section: Sunflower Breeding: Important Agronomical Traitsmentioning

confidence: 99%

Decoding Non-Target-Site Herbicide Resistance in Sunflower: The Beginning of the Story

Gil

Nestares

2019

Helia

View full text Add to dashboard Cite

In the last years, many efforts have been made to develop sunflower cultivars showing important agronomical characteristics such as herbicide resistance. These approaches have been focused mainly on resistance to herbicides with the same mode of action, that is acetohydroxyacid synthase (AHAS) inhibitors. To date, four induced and natural AHAS mutations have been found that confer resistance to these herbicides and many of these alleles are being used for the production of sunflower hybrids resistant to herbicides and to develop different non-transgenic technologies for weed control. However, little is known about the bases of non-target-site-based resistance (NTSR) developing cross-resistance to herbicides with different modes of action in sunflower. These mechanisms diminish the number of active herbicide molecules that reach the target and are generally polygenic. Elucidating the nature of NTSR would allow evaluating maximal efficiency conditions for the herbicide and would enable to establish weed management strategies in sunflower crop. Nowadays, mining of NTSR genes can be more easily accomplished taking advantage of up-to-date omics-based approaches: high-throughput techniques involving genomics, transcriptomics, proteomics and metabolomics. Considering the difficulties in the discovery of new compounds with a broad spectrum of weed control, it results essential to broaden the use of former herbicides which are highly efficient and ecologically desirable. Full understanding of NTSR mechanisms in sunflower would allow detecting specific genes potentially useful as biotechnological tools for the phytoremediation of herbicides and modern plant breeding.

show abstract

Sunflower: Improving Crop Productivity and Abiotic Stress Tolerance

Cited by 14 publications

References 237 publications

Genomics of crop wild relatives: expanding the gene pool for crop improvement

Genomics of crop wild relatives: expanding the gene pool for crop improvement

Stress response and detoxification mechanisms involved in non‐target‐site herbicide resistance in sunflower

Decoding Non-Target-Site Herbicide Resistance in Sunflower: The Beginning of the Story

Contact Info

Product

Resources

About