Turfgrass Molecular Genetic Improvement for Abiotic/Edaphic Stress Resistance

Duncan, R. R.; Carrow, Robert N.

doi:10.1016/s0065-2113(08)60516-7

Cited by 57 publications

(31 citation statements)

References 359 publications

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“…Multiple plasmalemma P transporters differentially express under varying P nutritional regimes (Epstein and Leggett 1954 ;Plaxton and Carswell 1999 ). The high-affi nity transporter mRNA transcripts in roots increased under low external P concentration for increased capacity of roots for P uptake (Duncan and Carrow 1999 ;Shenoy and Kalagudi 2005 ). These high-affi nity transporters play an important role in the P acquisition under P-defi cient root environment.…”

Section: Phosphorus Uptakementioning

confidence: 99%

Phosphorus Deficiency in Plants: Responses, Adaptive Mechanisms, and Signaling

Aziz

Ṣābir

Farooq

et al. 2013

Plant Signaling: Understanding the Molecular Crosstalk

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Phosphorus (P) defi ciency is a common nutritional factor limiting agricultural production around the globe. Application of phosphatic fertilizers is generally recommended to cope with P defi ciency; however, low use efficiency of available P fertilizers both in calcareous and acid soils limits its viability and also had serious environmental concerns. Higher plants have adapted a number of mechanism to live with low available P in soil such as changes in root morphology and architecture, decreased growth rate, improved P uptake and utilization effi ciency, and exudation of organic acids and enzymes to solubilize external inorganic and organic P compounds in the rhizosphere. Plant species and even cultivars widely differ in P effi ciency because of differences in one or more of these mechanisms. Exploitation of these genetic variations among crop plants can sustain agricultural production. Understanding the mechanism involved in sensing P defi ciency could facilitate selection, breeding, and genetic engineering approaches to improve crop production in P-stressed environments and could reduce dependence on nonrenewable inorganic P resources. In this chapter, we briefl y reviewed the responses of P defi ciency in higher plants, their adaptive mechanisms, and signaling pathways.

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Section: Phosphorus Uptakementioning

confidence: 99%

Phosphorus Deficiency in Plants: Responses, Adaptive Mechanisms, and Signaling

Aziz

Ṣābir

Farooq

et al. 2013

Plant Signaling: Understanding the Molecular Crosstalk

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“…The term mechanical impedance is the subject of controversy and probably involves more than hardness, per se. Oxygen deficiency may be a limiting factor, particularly when dense subsoils are wet, and perhaps, even when they are dry and hard (Carrow, 1996;Duncan and Carrow, 1999). Hard, dense soil zones may also restrict the transport of water to rooting zones.…”

Section: Discussionmentioning

confidence: 99%

Aluminum toxicity and high bulk density: Role in limiting shoot and root growth of selected aluminum indicator plants and eastern gamagrass in an acid soil

Foy¹,

Sadeghi

Ritchie

et al. 1999

Journal of Plant Nutrition

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“…Breeding cultivars for high tolerance to low levels of nutrient supply and abiotic and biotic constraints will have a better chance of improving NUE (Baligar et al 2001). Breeding plant cultivars with superior NUE depends upon: (a) the genetic variability present for particular trait (s) that governs NUE and (b) development of methodology to accurately quantify the physiological parameters that reflect the efficient NUE (Baligar et al 2001;Fageria et al 2008;Duncan and Baligar 1990;Duncan and Carrow 1999;Fageria and Baligar 1994;Gerloff 1987;Gerloff and Gabelman 1983;Vose 1984Vose , 1987. Recent reviews have summarized broader aspects of identified genes responsible for NUE and plant environment on the expression of these genes (Agrama 2006;Masclaux-Daubresse et al 2010;Pathak et al 2011;Xu et al 2012).…”

Section: Plant Factorsmentioning

confidence: 99%

Nutrient Use Efficiency in Plants: An Overview

Baligar

Fageria

2015

Nutrient Use Efficiency: From Basics to Advances

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In modern agriculture use of essential plant nutrients in crop production is very important to increase productivity and maintain sustainability of the cropping system. Use of nutrients in crop production is influenced by climatic, soil, plant, and social-economical condition of the farmers. Overall, nutrient use efficiency by crop plants is lower than 50 % under all agroecological conditions. Hence, large part of the applied nutrients is lost in the soil-plant system. The lower nutrient use efficiency is related to loss and/or unavailability due to many environmental factors. The low nutrient use efficiency is not only increase cost of crop production but also responsible for environmental pollution. Nutrient use efficiency in the literature is defined in several ways. The most common nutrient use efficiency is designated as nutrient efficiency ratio, agronomic efficiency, physiological efficiency, agrophysiological efficiency, apparent recovery efficiency, and utilization efficiency. Definition and methods of calculation of these deficiencies are presented. Improving nutrient use efficiency is essential from economic and environmental point of view. The most important strategies to improve nutrient use efficiency are the use of adequate rate, effective source, timing, and methods of application. In addition, decreasing abiotic and biotic stresses and use of nutrient efficient crop species and genotypes within species are also important in increasing nutrient use efficiency. IntroductionWorld agriculture is faced with serious challenge of feeding adequate and healthy food for over 7 billion (B) people and by 2050 world population expected to reach over 9 B (FAO 2013).

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Turfgrass Molecular Genetic Improvement for Abiotic/Edaphic Stress Resistance

Cited by 57 publications

References 359 publications

Phosphorus Deficiency in Plants: Responses, Adaptive Mechanisms, and Signaling

Phosphorus Deficiency in Plants: Responses, Adaptive Mechanisms, and Signaling

Aluminum toxicity and high bulk density: Role in limiting shoot and root growth of selected aluminum indicator plants and eastern gamagrass in an acid soil

Nutrient Use Efficiency in Plants: An Overview

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