Relation of Chlorosis to Concentration of Iron in Citrus Leaves

Wallihan, E. F.

doi:10.2307/2438456

Cited by 21 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the investigator soon faces the problem of the comparative iron status of green and chlorotic leaves. Some investigators have found less iron in chlorotic than in green leaves and have demonstrated a good correlation between iron and chlorophyll contents (8,15,18). But also, it has been found that chlorotic leaves may contain as much or more iron than comparable green leaves (7,11,19).…”

mentioning

confidence: 99%

The Relation between Iron and Chlorophyll Contents in Chlorotic Sunflower Leaves

Jacobson¹,

Oertli²

1956

Plant Physiol.

View full text Add to dashboard Cite

mentioning

confidence: 99%

The Relation between Iron and Chlorophyll Contents in Chlorotic Sunflower Leaves

Jacobson¹,

Oertli²

1956

Plant Physiol.

View full text Add to dashboard Cite

“…All leaves were washed individually with soap prior to being dried and ground for analysis. Chemical analyses were done by methods previously described (Wallihan, 1955). Standard samples consisted of fully expanded leaves of uniform age within an experiment, identified by tagging all growing tips after differential treatments were applied and the plants had become well established.…”

Section: Methodsmentioning

confidence: 99%

“…F IELD observations over many decades have resulted in a substantial list of environmental conditions that are commonly associated with iron deficiency symptoms in citrus and other plants (Thorne, Wann, and Robinson, 1951). The comparatively recent finding (Smith, Reuther, and Specht, 1950;Wallihan, 1955) that iron nutrition of citrus is susceptible to quantitative study makes it feasible to examine the effects of these conditions on iron uptake by citrus plants.…”

mentioning

confidence: 99%

Iron Uptake by Two Citrus Rootstock Species in Relation to Soil Moisture and CaCO₃¹

Wallihan¹,

Garber

1968

Agronomy Journal

View full text Add to dashboard Cite

Pot cultures were used to study the effects of soil water suction, presence of CaCO3 in the soil, and two species of rootstock, Citrus Aurantium L. and Citrus sinensis (Linn.) Osbeck, on iron uptake and iron sufficiency. Iron concentration in standard leaf samples was used as the measure of iron sufficiency; total leaf iron per plant was used as the measure of uptake. Iron uptake was proportional to the weight of the root system (r = .92) when water suction was varied; this supports the hypothesis that iron uptake from aerated soils depends primarily on contacts between root surfaces and iron‐bearing soil particles. Differences in iron uptake not accounted for by root size are described in terms of “root efficiency”, expressed as µg of leaf iron per gram of roots. Addition of CaCO3 to the soil markedly reduced the efficiency of sweet orange roots but affected that of sour orange roots only slightly, which suggests that the transfer of iron from soil to root involves two or more mechanisms that are differentially sensitive to CaCO3. Sufficiency of iron supply to the plants was correlated with root: top ratio (r = .73 when water suction was varied; r = .72 when both soil CaCO3 and rootstocks were varied). It is concluded that physical dimensions of the iron source (roots) and sink (tops) are important plant factors that regulate iron sufficiency in the plant.

show abstract

“…Thus, chlorotic leaves may contain as much or more total iron than healthy leaves of the same age (Wallihan 1955 ;Bar-Akiva 1961 ;DeKock et al 1979 ;Morales et al 1998 ) . This behaviour has been identi fi ed as chlorosis paradox by Römheld ( 2000 ) and can be related to the localization and binding state of iron in leaves.…”

Section: Leaf and Floral Mineral Analysismentioning

confidence: 99%

Lime-Induced Iron Chlorosis in Citrus: Diagnosis Through Physiological and Metabolic Evidences

Jiménez

Torrecillas

Sevilla

et al. 2012

Advances in Citrus Nutrition

View full text Add to dashboard Cite

Iron is essential for plants nutrition, being required in small but in critical concentrations for plant growth and crop productivity. Despite total iron content in soils is much higher than that required by plants, soil iron bioavailability is low, particularly in calcareous soils. For this, many agricultural crops worldwide growing in semiarid climates and calcareous soils suffer from iron de fi ciency (iron chlorosis or lime-induced chlorosis). In this sense, chlorotic leaves may contain as much or more total iron than healthy leaves of the same age ( chlorosis paradox ). In this chapter, we discuss the strengths and weaknesses of the leaf visual rating of chlorosis, fl oral mineral analysis and leaf active iron for diagnosing citrus iron nutritional status. The effect of iron chlorosis on yield and physical and chemical characteristics of citrus fruits was also reviewed. We analyse the metabolic response of citrus to iron de fi ciency, paying special attention to the inducible mechanisms developed under low-iron stress and to the metabolic changes able to be used to evaluate the iron de fi ciency. Finally, we reviewed the bioactive compounds in the citrus fruits, paying special attention to the fact that iron de fi ciency enhances phenolics and, as a consequence, health-promoting effects of the fruits for the human body.

show abstract

Relation of Chlorosis to Concentration of Iron in Citrus Leaves

Cited by 21 publications

References 0 publications

The Relation between Iron and Chlorophyll Contents in Chlorotic Sunflower Leaves

The Relation between Iron and Chlorophyll Contents in Chlorotic Sunflower Leaves

Iron Uptake by Two Citrus Rootstock Species in Relation to Soil Moisture and CaCO₃¹

Lime-Induced Iron Chlorosis in Citrus: Diagnosis Through Physiological and Metabolic Evidences

Contact Info

Product

Resources

About

Relation of Chlorosis to Concentration of Iron in Citrus Leaves

Cited by 21 publications

References 0 publications

The Relation between Iron and Chlorophyll Contents in Chlorotic Sunflower Leaves

The Relation between Iron and Chlorophyll Contents in Chlorotic Sunflower Leaves

Iron Uptake by Two Citrus Rootstock Species in Relation to Soil Moisture and CaCO31

Lime-Induced Iron Chlorosis in Citrus: Diagnosis Through Physiological and Metabolic Evidences

Contact Info

Product

Resources

About

Iron Uptake by Two Citrus Rootstock Species in Relation to Soil Moisture and CaCO₃¹